The release of epinephrine into the bloodstream is most likely to
A) lower blood sugar.
B) lower blood pressure.
C) stimulate digestion.
D) accelerate heartbeat.

Question

Quizplus · Accepted Answer

Epinephrine is also known as adrenaline and is released by the adrenal glands in response to stress or danger. Its primary effect is to increase the heart rate and force of the heartbeat, which helps prepare the body for intense physical activity or a fight-or-flight response. It may also increase blood pressure and dilate the airways, among other effects. Therefore, the best choice is D, which states that epinephrine accelerates the heartbeat.

The Release of Epinephrine into the Bloodstream Is Most Likely