All of the following will increase heart rate except:
A) sympathetic stimulation.
B) a decrease in aortic blood pressure.
C) a decrease in carotid blood pressure.
D) stimulation of cold receptors in the skin.

Question

Quizplus · Accepted Answer

Stimulation of cold receptors in the skin typically triggers a reflex that leads to vasoconstriction to conserve heat, rather than directly increasing heart rate. Sympathetic stimulation, and decreases in aortic or carotid blood pressure, on the other hand, directly or indirectly increase heart rate as part of the body's compensatory mechanisms to maintain blood flow and pressure.

All of the Following Will Increase Heart Rate Except