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Heart and Circulation
  
Brockhaus & Efron Encyclopedic Dictionaryby DoubleM2 on Flickr

  • The Circulatory System is made up of the heart, blood vessels and blood.
  • The heart is located slightly to the left of the middle of your chest.
  • The heart is a muscle about the size of your fist.

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Heart anatomyby Patrick J. Lynch on Flickr

The heart has 4 chambers

  1. Right Atrium
  2. Right Ventricle
  3. Left Atrium
  4. Left Ventricle
The large vessel coming from the top of the heart is called the Aorta.

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Heart anatomyby Patrick J. Lynch on Flickr

The blue side of the heart in this picture is the right side of the heart.

The right side of the heart pumps

de-oxygenated blood to the lungs, so it can be refreshed and

re-oxygenated.


The left side of the heart receives

oxygen-rich blood from the lungs and then pumps it to the rest of the body.

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Blood Vessel Model 3by GreenFlames09 on Flickr

This picture shows the heart and the blood vessels.

  • The red arteries carry oxygen-rich blood from our heart to our body.
  • The blue veins carry de-oxygenated blood back to the heart. Heart pumps the blood to the lungs to get re-oxygenated.

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Blood Vessel Model 5by GreenFlames09 on Flickr

  • Red arteries take the oxygen-rich blood and nutrients to all the major organs of the body, like the brain, liver, kidneys and the digestive system, and to all the cells in the body, to keep them healthy and alive. 
  • Without oxygen, the cells in our body would die. 

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circulatory systemby derek*b on Flickr

  • After the cells and organs have used the nutrients and oxygen from the blood, blue veins carry the waste and de-oxygenated blood back to the heart, and the heart pumps it to the lungs.
  • The circulatory system of our body has arteries and veins, also known as blood vessels. These are like little roads that travel to all the cells and organs in our body.

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Human head anatomy with external and internal carotid arteriesby Patrick J. Lynch on Flickr


The carotid arteries carry oxygenated blood to your brain, to keep your brain cells healthy and alive.
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Body Worlds Basketball Manby Paul Stevenson on Flickr

  • When we play any sports like basket ball or do exercise, our heart beats faster to carry the oxygen-rich blood around our body quicker, so that we can keep playing sport.
  • Exercise keeps our heart healthy, and keeps us fit.

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The heartby Antanith on Flickr

  • When our heart beats, pumping blood through the arteries, it creates a pulse.  
  • With each heart beat, we can feel a little thump like sensation when we check our pulse.  
  • The best place to check for our pulse is on our neck or on the inside of our wrist, nearest to our thumb.
  • The heart is an amazing and hard working muscle.
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Blood Vessel Model 4by GreenFlames09 on Flickr

Bibliograhy and references.

 

"Principles of Anatomy and Physiology" Fifth Edition.

By Gerard J Tortora and

Nicholas P  Anagnostakos. 1987.

Harper and Row Publishers.

 

www.neoK12.com

 

www.kidshealth.org

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