Which of the following is NOT true of histamine?
A) it is derived from the amino acid histidine
B) acts as a hormone that stimulates gastric secretion
C) acts as a neurotransmitter in the brain to cause drowsiness
D) acts as a regulator in inflammation and allergies
Correct Answer:
Verified
Q121: _ is an acetylcholinesterase antagonist used to
Q122: What type of autonomic fibers release ACh
Q123: Catecholamines activate postsynaptic cells by
A)inhibition of adenylate
Q124: Release of ACh at parasympathetic effectors is
Q125: Norepinephrine binding to a receptor stimulates the
Q127: Serotonin is synthesized from the amino acid
A)alanine.
B)glycine.
C)tryptophan.
D)serine.
Q128: What is NOT true of conduction through
Q129: Cholinergic fibers use _ as the neurotransmitter.
A)norepinephrine
B)acetylcholine
C)dopamine
D)serotonin
Q130: Serotonin is derived from the amino acid
Q131: What neurotransmitter is used by neurons with
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