Phenylephrine functions as a _______ because it promotes vasodilation in nasal mucosa.
A) a1 agonist.
B) a1 antagonist.
C) b1 agonist.
D) b1 antagonist.
Correct Answer:
Verified
Q72: Fibers that secrete norepinephrine are called adrenergic
Q73: The neurotransmitter released at terminal ganglia is
A)acetylcholine.
B)dopamine.
C)epinephrine.
D)norepinephrine.
Q74: _ selectively stimulates a2 receptors in brain
Q75: Beta-adrenergic receptors stimulate the production of cAMP.
Q76: Intracellular Ca2+ is elevated if norepinephrine binds
Q78: "Synapses en passant" refers to the fact
Q79: Which of the following is a catecholamine?
A)norepinephrine
B)acetylcholine
C)nitric
Q80: Epinephrine is a
A)sympathetic neurotransmitter.
B)parasympathetic neurotransmitter.
C)sympathomimetic hormone.
D)All apply.
Q81: Blood flow to skeletal muscle would be
Q82: Atropine would
A)block the release of epinephrine from
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