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MCAT Question A Day - 9/13/14

In extreme coldjust before the onset of frostbite, sudden vasodilation occurs manifested in flush skin. This vasodilation is most likely thresult of:

A.  paralysis of smooth muscle in the vascular walls.
B.  paralysis of skeletal muscle surrounding the vascular walls.
C.  sudden tachycardia with resultant increase in blood pressure.
D.  blood shuntindue to smooth muscle sphincters.

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