An increase in heart rate can be mediated through which of the following?
A) a decrease in parasympathetic nervous activity only
B) a decrease in sympathetic activity only
C) an increase in sympathetic activity only
D) an increase in parasympathetic activity and a decrease in sympathetic activity
E) a decrease in parasympathetic activity and an increase in sympathetic activity

Question

Quizplus · Accepted Answer

An increase in heart rate is typically mediated by a decrease in parasympathetic activity (which normally slows the heart rate) and an increase in sympathetic activity (which increases the heart rate).

An Increase in Heart Rate Can Be Mediated Through Which