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Biology, 02.08.2019 03:20 mattsucre1823

Closure of the atriventricular valve occurs when:
a. the papillary muscle contracts
b. the atrium contracts
c. the valve contracts
d. pressure inside the ventricle is less than pressure inside the atrium
e. pressure inside the ventricle is greater than pressure inside the atrium

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Closure of the atriventricular valve occurs when:
a. the papillary muscle contracts
b....

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