part 2 Flashcards

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1
Q

Why is the heart called a double pump?

A

Blood passed through the heart twice in each circuit.

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2
Q

What are the 2 purposes of valves?

A

To make sure blood flows in the right direction.

To prevent backflow of blood (flows backwards).

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3
Q

Name the 3 types of blood vessels.

A

Arteries, Capillaries and veins.

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