When a person rises quickly from a sitting position, all of the following reactions will occur except
A) the carotid baroreceptors become less active.
B) venous return is decreased.
C) reflex vasoconstriction of peripheral blood vessels occurs.
D) heart rate is reflexively elevated.
E) cardiac output will decrease.

Question

Quizplus · Accepted Answer

When a person rises quickly from a sitting position, venous return may decrease due to the force of gravity, causing a decrease in cardiac output. However, all of the other reactions listed in the question will occur, including decreased activity of the carotid baroreceptors, reflex vasoconstriction of peripheral blood vessels, and an increase in heart rate.

When a Person Rises Quickly from a Sitting Position, All