A patient has a dangerously low heart rate and is having difficulty breathing. The neurotransmitter that would be most helpful to him is
A) acetylcholine.
B) serotonin.
C) norepinephrine.
D) GABA.

Question

Quizplus · Accepted Answer

A dangerously low heart rate and difficulty breathing indicate that the patient's sympathetic nervous system needs to be activated. Norepinephrine is a neurotransmitter released by the sympathetic nervous system that can increase heart rate and improve breathing.

A Patient Has a Dangerously Low Heart Rate and Is