Question

Low blood pressure in the systemic arterioles causes those arterioles to ___, and low-pressure in the...

Low blood pressure in the systemic arterioles causes those arterioles to ___, and low-pressure in the aorta causes systemic arterioles to ___.

a) vasoconstrict, vasoconstrict

b) vasoconstrict, vasodilate

c) vasodilate, vasoconstrict

d) vasodilate, vasodilate

Science   Anatomy-And-Physiology   
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Answer #1

Low blood pressure in the systemic arterioles causes those arterioles to vasoconstrict , and low-pressure in the aorta causes systemic arterioles to vasodilate.

When the blood pressure decreases in systemic arterioles , they constrict to increase the flow of blood into arterioles.

When the blood pressure decreases in aorta , the aorta constrict which further leads to the dilation of systemic arterioles , so that the total net pressure is maintained otherwise it could lead to high pressure.

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