Q35 Contractions of auricle is
called heart beat.
a) True
b) False
Answers
Answered by
2
True ....
The contraction phase or systolic phase begins when the auricles contract. The blood forces its way through the mitral and tricuspid valves into the ventricles. The ventricles contract and force the blood through the semi-lunar valves, that is, the pulmonary and aortic valves.
Answered by
1
Answer:
False
Explanation:
The period of contraction that the heart undergoes while it pumps blood into circulation is called systole. The period of relaxation that occurs as the chambers fill with blood is called diastole.
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