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9 Cards in this Set

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Blood Vessel-
a tube that carries blood


Each organ has its own ____.


job


artery-
a blood vessel that carries blood away from the heart
Why does the heart beat all the time?
To pump blood throughout the body.
Why do organs work together?
To carry out large jobs for your body.

Oxygen-
a gas in the air that cells need to live



Vein-
blood vessel that carries from the body back to the heart
Blood vessels form a 1_________ for blood to reach all the 2______ of 3________.
1.pathway 2.cells 3.your body
The heart is made up mostly of ___________.


muscle tissue