Question

Blood pressure in the mammalian aorta is maximum during

• A. systole of the left ventricle
• B. diastole of the right atrium
• C. systole of the left atrium
• D. diastole of the right ventricle.

Answer 1

Answer: (A)

systole of the left ventricle

Answer 2

The temporary rise in blood pressure during the I contraction of the heart is called systolic pressure and | the temporary fall in blood pressure during relaxation of the heart is called diastolic pressure. Blood pressure is expressed as the ratio of the systolic pressure over the , diastolic pressure. For a healthy resting adult person, the ; average systolic/diastolic pressures are 120/80 mm Hg. Aorta is directly supplied by left ventricle thus, the blood pressure in aorta is highest during systole of left ventricle. During it, left ventricle contracts and pushes blood into aorta.