The heart is called a double pump because________ .
A) blood is sent from one pump that imparts a small pressure directly into a second pump that imparts higher pressure.
B) every chamber has a strong pumping action
C) it is two separate side- by- side pumps serving different circulations
D) blood flows into the receiving chambers, which pump it to the muscular chambers that pump it again for distribution
Correct Answer:
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A)as
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