Circulatory+System+-+6th+Period

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 * Top 5 Reasons we need our Circulatory System**
 * 1) **So blood can flow around our body**
 * 2) **To transfer oxygen throughout the body.**
 * 3) **To hold our blood**
 * 4) **To allow transport of hormones and nutrients**
 * 5) **To keep you alive**



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 * The heart is about the size of your fist
 * The heart beats about 3 billion times in a lifetime
 * About 8 million blood cells die per second (in the human body of course)
 * Blood carries harmful wastes away from the cells
 * Arteries branch out into capillaries and veins
 * one drop of blood has 5 million red blood cells and 12 thousand white blood cells
 * The plasma in blood is made in the liver
 * The heart will always continue to beat, even if removed from the body (which is what makes heart transplants possible)

"The Circulatory System." //Www.globalclassroom.org//. Web. 08 Dec. 2011. []. "Body Systems: Circulatory System - The Human Heart: An Online Exploration from The Franklin Institute, Made Possible by Unisys." Web. 12 Dec. 2011. []. "Circulatory System." //Hillendale Elementary School//. Web. 12 Dec. 2011. []. "Circulatory System." //Biology at Clermont College - University of Cincinnati//. Web. 12 Dec. 2011. []. "BrainPOP | Health | Learn about Circulatory System." //BrainPOP - Animated Educational Site for Kids - Science, Social Studies, English, Math, Arts//. Web. 12 Dec. 2011. []. //Voki Home//. Web. 12 Dec. 2011. []. //Wordle - Beautiful Word Clouds//. Web. 12 Dec. 2011. []. Dhillon, Gagan. "Circulatory System Facts." //Buzzle Web Portal: Intelligent Life on the Web//. Web. 12 Dec. 2011. .
 * __Bibliography :)__**