Which of these statements correctly describes vasoconstriction of the blood vessels to the skin?
A)It is not coordinated by the sympathetic nervous system.
B)It increases heat exchange with the environment.
C) It occurs when core body temperature is elevated.
D) It lowers heat exchange with the environment, and is coordinated by the sympathetic nervous system.

Question

Quizplus · Accepted Answer

Vasoconstriction of the blood vessels to the skin results in narrowing of the vessels, which lowers heat exchange with the environment. This process is coordinated by the sympathetic nervous system. It occurs when the body needs to conserve heat, such as when core body temperature is lowered.

Which of These Statements Correctly Describes Vasoconstriction of the Blood