Autonomic Nervous System

I. Divisions A. Sympathetic ,[object Object],B. Parasympathetic ,[object Object],II. Involuntary Motor System A. Autonomic vs. Somatic motor systems 1. Somatic ,[object Object],[object Object],[object Object]

2. Autonomic ,[object Object],[object Object],[object Object],III General nerve pathways A. Sympathetic ,[object Object],[object Object],[object Object]

[object Object],Spinal nerve Sympathetic nerve Exceptions: some pre do not synapse at symp chain Splanchnic nerve axons of preganglion exit Splanchnic nerve and synapse at collateral ganglion w/post Adrenal gland preganglion synapses directly w/adrenal

B. Parasympathetic ,[object Object],and sacral region of spinal cord ,[object Object],and through spinal nerves ,[object Object],IV. Signal transmission A. Sympathetic ,[object Object],[object Object],[object Object]

[object Object],Receptor = Adrenergic ( α,β) Sweat Glands ,[object Object],[object Object],[object Object],[object Object]

B. Parasympathetic ,[object Object],[object Object],[object Object],[object Object],receptor = muscarinic V. ANS generalized A. Regulated

B. Excitatory and inhibitory ,[object Object],C. Opposite effects VI. Autonomic control A. Cardiovascular function ,[object Object],Increases cardiac muscle contractions Increases blood pressure ,[object Object],Decrease in cardiac output due to decrease in calcium influx

B. Pupillary light reflex 1. Parasympathetic ,[object Object],2. Sympathetic ,[object Object],C. Salivary glands 1. Sympathetic ,[object Object],2. Parasympathetic ,[object Object]

Autonomic Nervous System

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Autonomic Nervous System