Blood pressure in the mammalian aorta is maximum during

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systole of the left ventricle

diastole of the right atrium

systole of the left atrium

diastole of the right ventricle.

answer is A.

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Detailed Solution

Blood pressure in the mammalian aorta is maximum during systole of the left ventricle.

Contraction of the ventricles generates blood pressure (BP), the hydrostatic pressure exerted by blood on the walls of a blood vessel. BP is determined by cardiac output blood volume, and vascular resistance. BP is highest in the aorta and large systemic arteries; in a resting, young adult, BP rises to about 120 mmHg during systole (ventricular contraction) and drops to about 80 mmHg during diastole (ventricular relaxation). Systolic blood pressure (SBP) is the highest pressure attained in arteries during systole, and diastolic blood pressure (DBP) is the lowest arterial pressure during diastole.

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