Circulatory

=**__The Circulatory System__**=


 * __Physiology__**

It's main function is to move things around the body to all your cells. This things include:
Oxygen Carbon Dioxide Sugar Hormones Water


 * __Anatomy__**

A series of tubes that run throughout the body:
 * Artery:** carries high pressure blood away from the heart.
 * Capillaries:** smallest blood vessels allow oxygen, carbon dioxide and other substances to move back and forth between the blood and your body cells.
 * Veins:** carry low pressure blood towards the heart.

The **heart** is the pump that pushes blood through all these vessels. The right side of the heart (on the left of the diagram) collects blood from the body and sends it to the lungs where it release carbon dioxide and picks up oxygen. The left side of the heart (on the right side of the diagram) collects blood from the lungs and sends it to all you body cells where it releases oxygen and picks up carbon dioxide.


 * Blood** is made of a fluid known as **plasma** that is mostly water and 2 types of cells:[[image:http://www.amsjournal.com/articles/2011/1/1/images/AnnMaxillofacSurg_2011_1_1_53_83158_u2.jpg width="297" height="397" align="right" caption="http://www.amsjournal.com/articles/2011/1/1/images/AnnMaxillofacSurg_2011_1_1_53_83158_u2.jpg"]]


 * Red Blood Cells:** carry oxygen and carbon dioxide[[image:http://www.becomehealthynow.com/images/organs/cells/cell2lrg.jpg width="353" height="221" caption="http://www.becomehealthynow.com/images/organs/cells/cell2lrg.jpg"]]


 * White Blood Cells:** identify and destroy foreign particles (mostly viruses and bacteria). [[image:http://images.wikia.com/gcse/images/c/c3/Phagocyte.jpg width="236" height="182" align="right" caption="http://images.wikia.com/gcse/images/c/c3/Phagocyte.jpg"]]