In the bloodstream,an increase in epinephrine causes a(n)
A) increase in heart rate.
B) drop in blood pressure.
C) constriction of the pupils.
D) slowing of respiration.

Question

Quizplus · Accepted Answer

Epinephrine is also known as adrenaline and is known to stimulate the sympathetic nervous system. This stimulation causes an increase in heart rate due to the release of catecholamines from the adrenal gland. Therefore, an increase in epinephrine would result in an increase in heart rate.

In the Bloodstream,an Increase in Epinephrine Causes A(n)