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Pharmacology

Autonomic Nervous System

QuestionAnswer
Parasympathetic nervous system's neurotransmitter Acetylcholine
Symapthetic nervous system's neurotransmitters epinephrine, norepinephrine, and dopamine
Adrenergic agonists act directly on the SNS by 1. direct receptor binding to organs or tissues 2. promotion of norepi release 3. mimicking the action of norepi or epi
4 main receptor types alpha 1, alpha 2, beta 1, beta 2, and recently a beta 3 has been identified
Alpha 1 receptors are mostly associated with excitation or stimulation
Alpha 2 receptors are mostly associated with relaxation and inhibition of epi
Beta 1 receptors are found mostly in the heart brain, kidney, lipocytes
Beta 2 receptors are located in the smooth muscle of the eye, arterioles, venules, bronchioles, liver, pancreas, GI and GU tracts
Created by: heatherbrown2020
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