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

Epinephrine Release

Epinephrine release involves the secretion of the hormone epinephrine (adrenaline) from the adrenal medulla, triggering the body's fight-or-flight response.

Heart Rate

Heart rate is the number of heartbeats per unit of time, typically expressed as beats per minute (BPM), indicating cardiovascular health and efficiency.