Friday, February 1, 2013

Science Log for Week Jan. 27 to Feb. 1, 2013

This week we covered the Circulatory System and its parts. We analyzed the flow of blood through the heart and it's distribution throughout the human body. The distribution of blood is made possible through the use of a complicated, but effective network of blood vessels (Arteries, Veins, and Capillaries). We also mentioned various disease states of the circulatory system, especially of the heart. This week post your comment about this topic, or any related scientific contribution. Blog On!

84 comments:

  1. This week we learned so many things about the circulatory system. we learned that our heart is a muscle organ. it is divided into the right and left side of your body. we also learned about the arteries and vanes. The vanes are blue and the arteries are red. The artery is where oxygen in rich blood travels. Oxygen in rich blood goes into the arteries.
    Blood low in oxygen travels in the vanes. The blood that's high in oxygen is darker than the blood that is low in oxygen. The blood in arteries is higher than the blood that runs in the vanes. the artery is the most important part of the body because it gives blood to all of the body parts. The heart pumps 5 quarts of blood every minute. It beats 100,000 times a day, and 35 million times a year.
    we also learned that the heart has a rhythm. One little mistake in that rhythm would create a damage in the heart. It would create a damage because its a muscle. we may not feel it when it happens but, its there. We learned that a stroke is when oxygen doesn't reach certain areas in your body.
    Conclusion
    Overall, there are a lot of interesting stuff about the circulatory system

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    1. Great post Lenay. Arteries are commonly outlines in red and veins blue in most anatomical figures representing the circulatory system. Also, as you mentioned, blood rich in oxygen travels through the arteries away from the heart and the veins return blood low in oxygen to the heart. Its an incredible process.

      You are absolutely right Lenay, when the rhythm of the heart is altered it can be dangerous.

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    2. I dont know where i have to write at →.←

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    3. Ronald, Just write it here under this part as a reply. Tomorrow I will show you how.

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    4. This week me and Lenay met up at my house on Sunday. We did an science experiment. We boiled an egg in Clorox instead of water. Lenay timed the egg to see what time the effects would happen. At 4:00 pm the egg started cracking. Then at 4:07pm the egg started to crack alot. At 4:15 we noticed that the rest of the shell started to get darker.
      4:25 was when the egg cracked completely. After that happen we saw that the yolk was diminishing. The water started boiling all the way to the top. Then when we lowered the temperature from 8 degrees to 4 degrees ( that what it said on the stove), to see what happen to the yolk. After we lowered the temperature we saw thick chunks of yolk sticking to the pot.
      That when we ended the experiment. Lenay and I had so much fun. This experiment was very fun and funny. Mr. Rosado me and Lenay did this together, you should give us both credit.

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    5. yesss ronald that experiment was fun, it was a good experiment we should do this more often

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    6. I enjoy hearing that you and Lenay did some experimenting this weekend. As scientists, we need to proceed our experiments carefully. What was your hypothesis? What where you and Lenay trying to demonstrate or prove? Conclusion?

      keep up the good work!

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    7. The respiratory system (or ventilatory system) is the biological system that introduces respiratory gases to the interior and performs gas exchange. In humans and other mammals, the anatomical features of the respiratory system include airways, lungs, and the respiratory muscles. Molecules of oxygen and carbon dioxide are passively exchanged, by diffusion, between the gaseous external environment and the blood. This exchange process occurs in the alveolar region of the lungs. Other animals, such as insects, have respiratory systems with very simple anatomical features, and in amphibians even the skin plays a vital role in gas exchange. Plants also have respiratory systems but the directionality of gas exchange can be opposite to that in animals. The respiratory system in plants also includes anatomical features such as holes on the undersides of leaves known as stomata.

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    8. Can we then be safe to say that all living organisms require oxygen or a respiration process? What do you thing Serina?

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  2. this weekend my class and i learned that the circulatory system is made out of vessels and the muscles that help control the flow if the blood around the body. the process is called circulation system are heart , arteries , capillaries and veins. also i learned that a heart has a rhythm and if something happens it can create a damage in the heart because its a muscle. Also that a stroke happens when oxygen doesn't reach important certain areas in your body. did you know that the heart pumps 5 quarts of blood every minute and that it beats 100,000 times dady and 35 million times a year ? wow that's alot , i also learned that a heart is a muscle and that the vains are blue and the arteries are red. i learned alot this week and i find that this was an important because it deals with our heart and our body and how the heart and our body works and i am looking forward to keep learing about this topic.

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    1. Great post Britney. Arteries are commonly outlines in red and veins blue in most anatomical figures representing the circulatory system. Also, as you mentioned, blood rich in oxygen travels through the arteries away from the heart and the veins return blood low in oxygen to the heart. Its an incredible process.

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    2. good job britney, nice work,

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    3. Wow briteny you learend a lot but,you need to work on your vocablulary other than that great work.

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  3. The circulatory system is an organ system that passes nutrients like ,amino acids, and lymph, gases, hormones, blood cells, to and from cells in the body to help fight diseases, stabilize body temperature.This system may be seen as a blood distribution network, but some consider the circulatory system as a composed cardiovascular system which also distributes blood .The heart pumps blood to the body and blood to the lungs. In the human heart there is one atrium and one ventricle for each circulation, and with both a systemic and a pulmonary circulation there are four chambers, left atrium, left ventricle, right atrium and right ventricle. Cardiovascular systems of humans are closed, meaning that the blood never leaves the network of blood vessels.The heart always has a rhythm if it skips one beat that means if something has gone wrong,ether the heart has problems pumping blood our you have trouble breathing.The arteries are blue and the veins are red.The human artery is like a supply train,it carries nutrients to the body.that is what I have learned in science and hoping to more intresting things in science.

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    1. nice paragraph and interesting stuff Robert.

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    2. Great work Robert, keep it up. You have great points in this paragraph. Remember as I mentioned, our circulatory system is a closed system ... in other words very similar to the water pipes in a building. I like your description about the arteries (supply train) ....

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  4. This week we learned about the circulatory system,respiratory system,excretory system,and the reproductive system.The circulatory system is the system that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic.A respiratory system is the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing.In addition, The excretory system is a passive biological system that removes excess, unnecessary materials from an organism, so as to help maintain homeostasis within the organism and prevent damage to the body.

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    1. Great Job Jeffrey. We will be covering this week the digestive and excretory systems.

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  5. This is what we learned this week Mr.Rosado.

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  6. This week we learned so many things about the Respiratory system is the biological system that introduces respiratory gases to the interior and performs gas exchange. In humans and other mammals, the anatomical features of the respiratory system include airways, lungs, and the respiratory muscles. Molecules of oxygen and carbon dioxide are passively exchanged, by diffusion, between the gaseous external environment and the blood. This exchange process occurs in the alveolar region of the lungs.

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    2. You got the main idea Hakeen, great job! Diffusion is an important process here and in many other parts of the body. When you get a chance find the definition of DIFFUSION and please share it here with us. Keep up the good work!

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  7. this week we learned so much about the Respiratory system,we learned that the Respiratory system supplies our blood with the oxygen needed to deliver oxygen to the rest of our bodies.Respiration is recieved through the mouth,nose and lungs.when we breath we inhale oxygen and exhale carbon dioxide

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  8. Great comment Zeinab! Remember always that breathing is an involuntary process just like our heart beats ...it happens automatically without us being aware of it. We do inhale oxygen and exhale carbon dioxide(CO2). Keep up the good work.

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  9. This weeks subject was pretty cool. Yes, there are still much more to learn about but the body still amazes me of how complex it is. Especially our involuntary systems. Think how much of a big pain it would be to force your breathing all the time or even worse, you have to figure out how to make a heart beat! It's still shocking how planned out we are. Like a blue print to a building in construction. This is Ariel Molina-Gameos and I'm riding on a narwhale.

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    1. Amazing yes it is Ariel! Our complete body and activities function in one accord in a wonderful and phenomenal way. Be sure to put on your seat beat on the 'narwhale' and obey nature's laws.

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    2. I agree with you, Ariel. However, I would like to add that it is amazing and outstanding how our bodies can contant so many organs and fuctions to consider our side. As a result, I could only imagine how small or big are other mammals compartment are.Do to this, I am excited to learn more about this weeks topic

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    3. Many believe that the more advanced and complicated the organism, the more complicated is their organ systems. I personally believe that this is not always true. I do agree that all systems have to work in a balanced scenario to maintain organisms healthy. Great feedback Celai.

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  12. The circulatory system is an organ system that passes nutrients such as amino acids, electrolytes and lymph, gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases, stabilize body temperature and to maintain homeostasis.

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  13. The Circulatory System is responsible for transporting materials throughout the entire body. It transports nutrients, water, and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce. It is an amazing highway that travels through your entire body connecting all your body cells.

    The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. When we breathe, we inhale oxygen and exhale carbon dioxide.

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    1. Indeed we do Chasity. Can you imagine the work load of our circulatory system, especially the heart? WOW

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  15. The circulatory system is an organ system that passes nutrients (such as amino acids, electrolytes and lymph), gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases, stabilize body temperature and pH, and to maintain homeostasis.
    This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood,[1] and the lymphatic system,[2] which returns excess filtered blood plasma from the interstitial fluid (between cells) as lymph. While humans, as well as other vertebrates, have a closed cardiovascular system (meaning that the blood never leaves the network of arteries, veins and capillaries), some invertebrate groups have an open cardiovascular system. The most primitive animal phyla[clarify] lack circulatory systems. The lymphatic system, on the other hand, is an open system providing an accessory route for excess interstitial fluid to get returned to the blood.

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  17. This week I learned...
    This week class 7-32 learned all about the respiratory system and how it works. We also learned that there are parts of your body that you don't control such as breathing and the heart beating. These actions are called in-voluntary. We also learned about how red veins are actually called arteries and those arteries carry blood cells that are rich in oxygen and the blue veins are low on oxygen but are high in co2 (Corbin onyx-cued). The arteries are important because if they get cut or damaged in any type of way they will bleed forever any they won't heal.

    This week class 7-32 also learned that a group of cells make one tissue, a group of tissues make a organ and finally group of organs make a organ system. Mr.Rosado also spoke to the class about how a child is born and what is the early process of the egg in the women. Women have 2 ovaries, only one ovary gets to make the egg. Phatopian tubes carry the egg and while it's in the phatopian tube the egg gets to be fertilize. When the male produces sperm while having sex the sperm will swim its way through the woman's vagina and make its way towards the egg. When one sperm sell meets the egg it loses its tail. If the egg doesn't get sperm to it within a mouth the egg will fall into a egg holding chamber and it will be removed after a certain time period. When it is ready to be removed the female will get what is called their period.

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    1. I am very impressed with your comment and I am glad to see that you can relate in your words what was mentioned in class. I would like to make a few corrections:
      1. Yes females have two ovaries, they both should be active producing eggs at puberty. The way it works is that one ovary releases an egg one at a time. One cycle it could be the right ovary and the next cycle it can be the left ovary. This is monitored and controlled by female hormones.
      2. The word is written Fallopian Tube.
      3. The female ovum (egg) has a window of approx. 48 hours to get fertilized before it is discarded.

      Great post and I see you wrote things in your own words.

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  18. respiratory system is the biological system it introduces respiratory gas to the interior. Then it performs gas exchange. This exchange process occurs in the alveolar region of the lungs.Animals, such as insects, have respiratory systems with very simple anatomical features, and in amphibians even the skin plays a vital role in gas exchange.

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  19. I think learning about the circulatory system is interesting because we are learning about the body because we can know what is going on with the system and i find it extrodinary.We can know about the heart blood and our cholestrol.I like learning about different things that are going in the outside world.Its good to know about our body cause things like this can come in handy someday. Published by Joel Gonzalez

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    1. Your heart is an organ made of cardiac muscle tissue. Your heart has its own blood vessels coronary circulation. Blood vessels cary blood to every part of your body. I think learning about the circulation system is cool because it teaches you about your body, and tells what goes on in our body and I find it very interesting.

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  20. Learning About The Circulary System Is Type Wavey Because You Learn About How Blood Flows Around Your Body And How Your Blod Functions . Blood Vessels Carries Blood To Evey Part Of Your Body.Blood Moves Oxygen & Nutrients To Cells & Carries Carbon Dioxide And Other Wastes Away From The Cells . Sometimes Blood Carries Substances Made In One Part Of The Body To Another Part Of The Body Were The Substances Are Needed . Movements Of Materials Into & Out Of Your Cells Occurs By Diffusion & Active Transport

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  21. Hi, my name is Trinity and i'm pin class 732. This week we learned about the Ciculary System. It was really interesting because I like learning about my body. My favorite part was learning about my vains. I never knew there was one vain and one arteries.

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    1. Trinity, their are miles of vessels (veins, arteries, and capillaries)in an adult body.

      First, let me tell you that your body has more than just veins. You also have arteries and capillaries. I think the answer you are seeking is to the question: "How many miles of blood vessels are there in a human body?"

      The arteries are the vessels that carry blood from the heart to the organs and tissues of the body. They begin at the base of the heart and branch like tree trunks (hollow ones, of course) until they get smaller and smaller. Finally, when they reach the tissue cells of the body, they are so tiny that only one blood cell can get through them at a time. When the blood vessels are this small they are called capillaries. There are more capillaries (and more miles of capillaries) than any other kind of blood vessel.

      Veins are the vessels that drain the blood from the capillaries and carry it back to the heart. The tiny veins that drain the capillaries flow into larger and larger vessels, like a river flowing to the sea. When they deliver the blood back to the heart the heart pumps the blood back to the arteries and it begins its round trip again.

      To answer your question, there are approximately 60,000 miles of blood vessels in an adult human body. That's about 100,000 kilometers. And if you really did stretch out your vessels for 60,000 miles most of them would be capillary miles. Each capillary is very short, but there are so very many of them.

      THAT IS ALOT OF ARTERIES, VEINS, AND CAPILLARIES !

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  22. The circulatory system is amazing. it includes many parts.it gets blood filled with oxygen were it is needed. it also includes the function of your body. imagen being a red blood cell going through vains and arterys. wouldnt that be amazing. also, white blood cells go through the vains to go to fight infections. There is this other one that goes to heal cuts but i forgot. see ya .

    :D

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    1. We will cover how blood and its components help fight infection and heal wounds.

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    2. Mr.rosado i will lile to learn alot how blood fight infections so i can know what keeps mi from getting sick.To be honest your a cool science teacher.

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  23. Hi this is Michelle, from class 731. This week i learned about the circulatory system. Its organisms,cells,and other things that are inside of your body that goes in different places and veins that helps your body from diseases or others like illness. It was pretty cool when Mr. Rosado did the heart beat.It sounded do real. I also learned if you ever cut yourself it going to heel by time because the skin recovers because of the blood.

    My opinion about circulatory system was great to learn because you can have a stroke and still live but sometimes the doctor might not know only your body because its inside of you their not miracles. Their your cells that develop again and you live. Now that's science. And if you ever ask this to your teacher:Do we have blood every where? That's a yes because you have veins all over your body, that carries it around your whole body.

    BYE (FOR NOW)

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    1. Awesome posting Michelle. Let me tell you I enjoy this part of the circulatory system when it comes to the heart. It is an incredible organ that has an incredible work load. Will keep working on circulation and blood these days!

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  24. I didn't blog this week but I was super exited to learn about this.I've always wanted to learn about how the body works.This topic was mind blowing.Now I know how blood goes about in my body.I hope to learn more like the skeletal system.

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    1. We are just getting started Katherine. Definitely it is all interesting, especially when you are learning about your body.

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  25. I am sorry for not posting on the weekend.During the week i learned that the respiratory system is made up of organs in your body that help you to breathe everyday.One main part of the respiratory system is the lungs.In the lungs oxygen is taken into the body and carbon dioxide is breathed out.The Circulatory System is responsible for transporting materials throughout the entire body.The Circulatory System is broken up into three important parts the heart,blood,and blood vessels.

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    1. Thank you yamilet for this entertaining story about the circulatory system, I had no idea that this is so important to us as humans. What I know about the circulatory system is that passes nutrients, gases, hormones, and blood cells, etc; to and from the cells to help fight diseases, and stabilize body tempetures. This topic will also help us in life when we get older. No, I did not copy and paste either. :) :) :) :) :) :)

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  26. Mr.Rosado excuse me for not blogging during the weekend however the respiratory system has many parts.One of it features is that it is able to send waste to the kidney and later on be digested.The circulatory system is broken into only three important systems the heart the blood and vessels from the blood.

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    1. Good to see your posting Henry, It's ok you are here now. We will continue to cover the circulatory system this week along with blood.

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  27. Red blood cells carry oxygen from the lungs to all the cells of the body. White blood cells are like soldiers protecting the body. ARTERIES are vessels that carry blood away from the heart. VEINS are vessels that carry blood back to the heart. Blood CIRCULATES–circles–all around your body in about one or two minutes. Inside the heart are four hollow chambers. Each chamber is a little pump. The pumping pushes blood all around your body. 7-410A Jeffrey Freeman

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    1. Jeffrey, I already opened the new posting for this week on the main page, you can pass this posting over there.

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  29. In the circulation system a lot of things happen hear. Like in that system blood flows to get push all around in the body. So also that air travels from the lungs to getair al over the body for the cells. Otherwise without this system we will not have the blood and oxygen will not travel. Lastely i also remember that if the circulation system does not work dieases you have some diease like asthma strokes and chest pains.

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  30. The Circulatory System is responsible for transporting materials throughout the entire body. It transports nutrients, water, and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce. It is like an amazing highway that travels through your entire body connecting all your body cells. No matter how amazing the Circulatory System may be it can't help protect your body from everything. Many people have died from strokes,asthma,and different kinds of chest pains. Copy and Paste were not used in the making of this response.

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  31. This week I learned a lot about the circulatory system.I learned that the circulatory system carry's oxygen from the lungs to all the cells of the body.For instance,if you cut your self by mistake, are you going to start bleeding ? Yes you are because like i said blood cells carry oxygen from the lungs to all the cells of the body.Another thing that I learned about the circulatory system is that your cells and molecules in your blood help cure infections and it also helps heal an injury or when the skin is cut or broken.Although a person with a serious injury might lose a lot of blood.That is not good,that's why when you see people loosing blood you have to wrap the wound with some thing to make the bleeding stop.If you do loose a lot of blood you might need a blood transfusion.

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  32. This week I learned about the circulatory system. our heart is really a muscle. It's located a little to the left of the middle of your chest, and it's about the size of your fist. There are lots of muscles all over your body. But the heart muscle is special because of what it does. The heart sends blood around your body. The blood provides your body with the oxygen and nutrients it needs. It also carries away waste.Your heart is sort of like a pump, or two pumps in one. The right side of your heart receives blood from the body and pumps it to the lungs. The left side of the heart does the exact opposite: It receives blood from the lungs and pumps it out to the body.

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  33. The circulatory system is an organ system that passes nutrients such as amino acids, electrolytes and lymph, gases, hormones, blood cells to and from cells in the body to help fight diseases, stabilize body temperature and pH, and to maintain homeostasis.
    This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood,and the lymphatic system,which returns excess filtered blood plasma from the interstitial fluid between cells as lymph. While humans, as well as other vertebrates, have a closed cardiovascular system meaning that the blood never leaves the network of arteries, veins and capillaries, some invertebrate groups have an open cardiovascular system. The most primitive animal phyla clarify lack circulatory systems. The lymphatic system, on the other hand, is an open system providing an accessory route for excess interstitial fluid to get returned to the blood.

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    1. Great post Jose! I am glad you decided to jump in and BLOG! Keep up the good work.

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  35. In The Beginning Of This Mouth We Have Been Learning About The Circulatory System ( How It Works).
    FACTS :)

    It Takes 20 Seconds For Blood To Circulate The Entire Body. The human body has about 5 liters almost 9 pints of blood traveling through it by way of the circulatory system.Since he heart having its own electrical impulse, it will continue to beat even when removed from the body as long as it has an adequate supply of oxygen. Red blood cells live for upto 4 months and make 250,000 round trips around the body before returning to the bone marrow, where they were born, to die. Three million red blood cells are lost and replaced every second.Red blood cells carry oxygen from the lungs to all the cells of the body.White blood cells are like soldiers protecting the body.Arteries are vessels that carry blood away from the heart.Veins are vessels that carry blood back to the heart.Inside the heart are four tunnels. Eachtunnel is a little pump. The pumping pushes blood all around your body.

    DONE
    P.s ( i Had to look some things about and put it in my own words but i learn alot from it )
    -Candice

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  36. The circulatory system is responsible for transporting materials throughout the entire body. It transports nutrients, water and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce. It is an amazing highway that travels throughout your entire body connecting all your body cells. The circulatory system is divided into three major parts- The Heart, The Blood, The Blood Vessels. The Heart is an amazing organ. The heart beats about 3 BILLION times during an average lifetime. It is a muscle about the size of your fist. The heart is located in the center of your chest slightly to the left. It's job is to pump your blood and keep the blood moving throughout your body.

    It is your job to keep your heart healthy and there are three main things you need to remember in order to keep your heart healthy.
    Exercise on a regular basis. Get outside and play. Keep that body moving (walk, jog, run, bike, skate, jump, swim). Eat Healthy. Remember the Food Pyramid and make sure your eating your food from the bottom to top.
    Don't Smoke! Don't Smoke! Don't Smoke! Don't Smoke! Don't Smoke!
    The blood is an amazing substance that is constantly flowing through our bodies.
    Your blood is pumped by your heart.
    Your blood travels through thousands of miles of blood vessels right within your own body.
    Your blood carries nutrients, water, oxygen and waste products to and from your body cells.
    A young person has about a gallon of blood. An adult has about 5 quarts.
    Your blood is not just a red liquid but rather is made up of liquids, solids and small amounts of oxygen and carbon dioxide.

    Red Blood Cells are responsible for carrying oxygen and carbon dioxide. Red Blood Cells pick up oxygen in the lungs and transport it to all the body cells. After delivering the oxygen to the cells it gathers up the carbon dioxide(a waste gas produced as our cells are working) and transports carbon dioxide back to the lungs where it is removed from the body when we exhale(breath out). There are about 5,000,000 Red Blood Cells in ONE drop of blood. White Blood Cells (Germinators)White Blood Cells help the body fight off germs. White Blood Cells attack and destroy germs when they enter the body. When you have an infection your body will produce more White Blood Cells to help fight an infection. Sometimes our White Blood Cells need a little help and the Doctor will prescribe an antibiotic to help our White Blood Cells fight a large scale infection. Platelet are blood cells that help stop bleeding. When we cut ourselves we have broken a blood vessel and the blood leaks out. In order to plug up the holes where the blood is leaking from the platelets start to stick to the opening of the damaged blood vessels. As the platelets stick to the opening of the damaged vessel they attract more platelets, fibers and other blood cells to help form a plug to seal the broken blood vessel. When the platelet plug is completely formed the wound stops bleeding. We call our platelet plugs scabs.
    Plasma is the liquid part of the blood. Approximately half of your blood is made of plasma. The plasma carries the blood cells and other components throughout the body. Plasma is made in the liver. The Red Blood Cells, White Blood Cells and Platelets are made by the bone marrow. Bone marrow is a soft tissue inside of our bones that produces blood cells.

    In class we talked about three types of blood vessels: Arteries, Capillaries, Veins.
    Arteries are blood vessels that carry oxygen rich blood AWAY from the heart. Remember, A A Arteries Away, A A Arteries Away.
    Capillaries are tiny blood vessels as thin or thinner than the hairs on your head. Capillaries connect arteries to veins. Food substances(nutrients), oxygen and wastes pass in and out of your blood through the capillary walls. Veins carry blood back toward your heart.


    -Mr. Rosado I really enjoyed the lesson! ^_^

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    2. Man orneli you write alot.keep up the good work.

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  37. this week we have learned about the ciculatory system. Witch is basically how our body breaks down the nutrients from the food we eat. It stores the nutrients in out body that we need need like vitamin c and d and more. And the things that our body doesn't need it leaves the body when we use the bathroom.

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  38. This week we learned that how the blood cells flow through the body and how we have learned that we have blood all over our body

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  39. Hi my name is Alpha. This week i learned about the circulatory system. about the cool things . Such as the blood vestals and the vain and how my heart works .i learned about my organs i saw how it works and how to control it.
    in my own opion i think this lesson was pretty cool i learned alot about my body the cells in my body cool.

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  40. This Week I Learned About The Circulatory.I learned the circulatory serves to move blood to a site or sites where it can be oxygenated, and where wastes can be disposed.The circulatory system breaks down the nutrients from your body.Many invertebrates do not have a circulatory system at all. Their cells are close enough to their environment for oxygen, other gases, nutrients, and waste products to simply diffuse out of and into their cells.

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  41. The circulatory system is an organ system that passes nutrients, gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases, stabilize body temperature and pH, and to maintain homeostasis.
    This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood,[1] and the lymphatic system,[2] which returns excess filtered blood plasma from the interstitial fluid (between cells) as lymph. While humans, as well as other vertebrates, have a closed cardiovascular system (meaning that the blood never leaves the network of arteries, veins and capillaries), some invertebrate groups have an open cardiovascular system. The most primitive animal phyla[clarify] lack circulatory systems. The lymphatic system, on the other hand, is an open system providing an accessory route for excess interstitial fluid to get returned to the blood.
    Ischemia- Sometimes the heart muscle is not getting enough blood flow, more importantly, the oxygen the blood carries is insufficient to sustain muscle which has a very high metabolic rate, and oxygen demand. The term loosely means “not quite enough blood.” Typically, the patient suffers angina pain (see above) and they may think they are having a heart attack. And, they may be!

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  42. The circulatory system is an organ system that passes nutrients (such as amino acids, electrolytes and lymph), gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases, stabilize body temperature and pH, and to maintain homeostasis.
    Two types of fluids move through the circulatory system: blood and lymph. Lymph is essentially recycled blood plasma after it has been filtered from the blood cells and returned to the lymphatic system. The blood, heart, and blood vessels form the cardiovascular (from Latin words meaning 'heart'-'vessel') system. The lymph, lymph nodes, and lymph vessels form the lymphatic system. The cardiovascular system and the lymphatic system collectively make up the circulatory system.

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  43. i learned in class that the circulation system The circulatory system is an organ system that passes nutrients (such as amino acids, electrolytes and lymph), gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases, stabilize body temperature and pH, and to maintain homeostasis.

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