Stimulation of ?1 receptors present on smooth muscle cells of blood vessels to the skin by norepinephrine results in:

A) vasodilation.

B) bronchodilation.

C) vasoconstriction.

D) sweating.


Answer: C

Anatomy & Physiology

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Thin ________ cells line the surface of the alveoli and allow for efficient gas exchange.

What will be an ideal response?

Anatomy & Physiology