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Pharmacology Crash Course 3


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Autonomic Nervous System
Parasympathetic and Sympathetic Nervous System
Parasympathetic Nervous System Mediated through the ?
Vagus Nerve
Parasympathetic chemical mediator
Acetycholine
Parasympathetic stimulation
Slows HR, lowers BP, constricts pupils, increases salivation, induces muscular weakness, increases motility (Peristalsis)
Parasympathetic NS blocked by
Atropine (parasympatholytic agent)
Sympathetic Nervous System Mediated through the ?
Thoracic and lumbar ganglia
Sympathetic chemical mediator
Norepinephrine
Sympathetic NS hormones
Epinephrine and Norepinephrine
Stimulation of Sympathetic Nervous System
Adrenergic and Dopaminergic Receptors
Adrenergic Receptor: Alpha 1
Bronchoconstriction and Vasoconstriction
Adrenergic Receptor: Beta 1
Increases Heart Rate
Adrenergic Receptor: Beta 2
Bronchodilation, Vasodilation, Increase cardiac contractility and automaticity