Which of the following factors would cause an increase in heart rate?
A) Increased parasympathetic stimulation
B) Stimulation of baroreceptors in the aorta
C) Increased epinephrine release from the adrenal medulla
D) Increased production of atrial natriuretic factor
E) Stimulation through the vagus nerve

Question

Quizplus · Accepted Answer

Increased epinephrine release from the adrenal medulla directly stimulates the heart to increase heart rate as part of the "fight or flight" response, enhancing cardiac output to meet the body's increased demand for oxygen and nutrients.

Which of the Following Factors Would Cause an Increase in Heart