Question

When the body is exerting itself, physiological factors can affect the radius of the veins. For example, the muscular actions of the skeletal muscle system can change the shape of the veins through [vasoconstriction OR vascular compression OR vascular dilation]. This [increases OR decreases] venous capacity and [increases OR decreases] flow rate back to the heart].

If the body is normally able to regulate MAP in the body, then why does consistent high blood pressure occur?

a. Over time, the baroreceptors that monitor pressure become oversensitized from continuous high pressure, which increases their regulating activity.

b. Over time, the baroreceptors deactivate completely after exposure to continuous high pressure, which means the body must rely on slower, long-term control mechanisms.

c. Over time, the baroreceptors that monitor pressure become desensitized from continuous high pressure, which reduces their regulating activity.

Answer 1

ANSWER:-

1)

When the body is exerting itself, physiological factors can affect the radius of the veins. For example, the muscular actions of the skeletal muscle system can change the shape of the veins through [ vascular compression ]. This [decreases] venous capacity and [increases] flow rate back to the heart.

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2)

ANSWER:- (C). Over time, the baroreceptors that monitor pressure become desensitized from continuous high pressure, which reduces their regulating activity