Arterial smooth muscle is predominately innervated by the sympathetic nervous sy

Question

Arterial smooth muscle is predominately innervated by the sympathetic nervous system. This system is responsible for vasodilation AND vasoconstriction. Which of the following conclusions can you make? A. A decreased release of norepinephrine will result in a decrease in vessel resistance B. Epinephrine and norepinephrine will both always elicit the same response regardless of which receptor is stimulated C. The vascular smooth muscle is under tonic control of the sympathetic nervous system D. A and C E. A, B and C For questions 7-9 indicate whether it will cause an increase or decrease in blood vessel resistance. Increase Decrease A drug that mimics the action of bradykinin _____ Decreased release of Norepinephrine _____ Increased release of angiotensin II _____

Explanation / Answer

Answer

Aerterial smooth muscle is predominantly innvervated by the sympathetic nervous system. This system is responsible for vasodilation and vasoconstriction. Which of the following conclusions can you make?

A) A decreased release of Norepinephrine will result in a decrease in vessel resistance

B) Epinephrine and Norepinephrine will both always elicit the same response regardless of which receptor is stimulated

C) The vascular smooth muscle is under tonic control of the sympathetic nervous system
D) A and C - Correct

E) A, B and C

A drug that mimics the action of bradykinin will cause decrease in blood vessel resistance

Decreased release of Norepinephrine will cause decrease in blood vessel resistance

Increased release of angiotensin II will cause increase in blood vessel resistance.

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