domingo, 28 de noviembre de 2010

Summary #8 "Blood System" in other words the "Circulatory System"

The function of the circulatory system is to transport nutrients and oxygen to all the humans´ body. The blood have three types of cells and its function :
  • Red Blood Cells: transport nutrients and oxygen.


  •  White Blood Cells: Fight diseases( infections )
  • Platelets:  Stop bleeding and cover injuries from bleed.


The most important organ on the Circulatory System  is the heart; is the only organ that pumps blood to all our body. There are three types of blood vessels in our body here is with each function are:
  1. Arteries: Carry blood from the heart to the body.
  2. Capillaries: Connect veins and arteries.
  3. Veins: Bring the blood back to the heart.
The circulatory system isn´t only the heart and the three blood vessels; it is the lungs, the small intestine and the kidneys.

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