The period of contraction is known as _______.
A) diastole
B) systole
C) atrioventricular pause
D) sinoatrial pause
Correct Answer:
Verified
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Q31: Sympathetic nerves release the neurotransmitter _, which
Q32: The _ delivers blood from the organs
Q33: Which of the following is not a
Q35: _ carry blood from the ventricles of
Q36: The normal heart rate is about _
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