A) systole of the left atrium
B) diastole of the right ventricle
C) systole of the left ventricle
D) diastole of the right atrium
Correct Answer: C
Solution :
Blood pressure in the mammalian aorta is maximum during systole of the left ventricle because the heart shrinks and pushes loads of blood into aorta. It drives blood through the aortic valve to the body and organs except lungs. As the pressure in the aorta travels down into the distributing arteries the characteristic changes in diastolic and systolic pressures are observed. There is a very small decline in aterial pressure due to the low resistance of large distributing arteries.
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