Constriction of blood vessels near the skin's surface is a characteristic of activity in
A) the somatic nervous system.
B) the sympathetic nervous system.
C) the parasympathetic nervous system.
D) both the sympathetic and parasympathetic nervous systems.

Question

Quizplus · Accepted Answer

Constriction of blood vessels near the skin's surface is a response to activity in the sympathetic nervous system, which is responsible for the fight-or-flight response. This response prepares the body for action by increasing heart rate, respiration, and blood pressure, while reducing blood flow to non-essential organs such as the skin and digestive system. The parasympathetic nervous system, on the other hand, is responsible for rest and digest activities and does not cause constriction of blood vessels near the skin's surface. The somatic nervous system is responsible for conscious movement and sensation, but does not directly control blood vessel constriction in the skin.

Constriction of Blood Vessels near the Skin's Surface Is a Characteristic