During exercise, an increase in sympathetic nervous system activity leads to vasoconstriction in most vascular beds. This does not happen in the contracting (active) skeletal muscle, due to the effect of locally produced metabolites. What would be the consequence to the cardiovascular system if vasoconstriction did occur in the active muscle?

Correct Answer: B

Rationale: The correct answer is B: there would be an increase in total peripheral resistance. When sympathetic activity causes vasoconstriction in most vascular beds but not in the active skeletal muscle, it allows for increased blood flow to the muscles during exercise. If vasoconstriction did occur in the active muscle, it would impede blood flow to the muscles, leading to an increase in resistance in the peripheral circulation. This would result in an increase in total peripheral resistance, making it harder for the heart to pump blood efficiently to meet the demands of the active muscles. Choices A, C, and D are incorrect because they do not align with the physiological consequences of vasoconstriction in the active muscle during exercise.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.