An individual, driving through his neighborhood, suddenly jams on his car brakes to avoid hitting a child who runs into the road after a ball. a few seconds later, the driver finds that he is shaking and his heart is pounding. this is primarily due to the secretion of
a. epinephrine from the adrenal medulla.
b. thyroxine from the thyroid.
c. insulin from the pancreas.
d. cortisol from the adrenal cortex.
e. norepinephrine from the adrenal cortex.