The neurotransmitter __________ plays the key role in generating an erection in the mammalian penis.
A)acetylcholine
B)dopamine
C)GABA
D)nitric oxide

Question

Quizplus · Accepted Answer

Nitric oxide plays a key role in generating an erection in the mammalian penis. It is released from nerve endings in the penis and triggers a series of reactions that ultimately relax the smooth muscle in the penis, allowing for increased blood flow and an erection to occur.

The Neurotransmitter __________ Plays the Key Role in Generating an Erection