The neurotransmitter agent that is normally released in the sinoatrial node of the heart in response to a blood pressure increase is
(a) Acetylcholine
(b) Dopamine
(c) Epinephrine
(d) Glutamate
(e) Norepinephrine
(a) Acetylcholine
(b) Dopamine
(c) Epinephrine
(d) Glutamate
(e) Norepinephrine
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