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OpenStudy (anonymous):

Describe the circulatory system and how it works within the body. Include the function of at least two organs or main parts within the organ system.

OpenStudy (anonymous):

main 2 things .....Heart and lungs.Heart pumps,Lungs oxygenate.

OpenStudy (anonymous):

The circulatory system is made up of the heart, blood, and blood vessels and takes nutrients and oxygen to all the cells in your body. ~ My 4th grade teacher made us memorize the definition... Amazingly I never forgot it. (:

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