Which neurotransmitter, by acting as a retrograde messenger, has a role in maintaining smooth muscle relaxation, increasing blood flow to the penis, and thereby maintaining erection?
A) NE
B) 5-HT
C) Acetylcholine
D) NO
Correct Answer:
Verified
Q108: Matching
-Caffeine _
A) GABA receptors
B) Acetylcholine receptors
C) Adenosine
Q109: Matching
-Heroin
A) GABA receptors
B) Acetylcholine receptors
C) Adenosine receptors
D)
Q110: Which substance is not an opioid peptide?
A)
Q111: Which structure contains serotonergic nerve cell bodies?
A)
Q112: Which site shows a loss of dopaminergic
Q114: If a newly developed drug is found
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