Which of the following statements about epinephrine is true?

A) The effects of epinephrine are long-lasting (days to weeks) .
B) Epinephrine increases blood pressure.
C) Epinephrine decreases heart rate.
D) Epinephrine increases GI tract activity.
E) Epinephrine is a chemical of the parasympathetic nervous system.

Epinephrine, also known as adrenaline, is a hormone and a neurotransmitter that increases blood pressure by causing vasoconstriction in blood vessels and increasing heart rate, among other effects. It is part of the body's fight or flight response, which is mediated by the sympathetic nervous system, not the parasympathetic nervous system. Its effects are not long-lasting (days to weeks), it does not decrease heart rate, and it decreases rather than increases GI tract activity.