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F08 U-5 L-4 autonomics - Autonomic Nervous System(ANS...

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Autonomic Nervous System (ANS) Auto no m ic  = s e lf g o ve rning , invo luntary Re s po ns ible  fo r vis c e ral m o to r func tio n Two parts:   S ym pathe tic  & Paras ym pathe tic …Ne rve   Antag o nis ts … - o ne  s tim ulate s …o ne  inhibits
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Parasympathetic “rest and digest” Sympathetic “fight or flight” Visceral= Autonomic involuntary Somatic voluntary Afferent Sensory  division Efferent Motor division PNS CNS
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Somatic CNS outside CNS skeletal muscle voluntary smooth muscle, cardiac muscle, glands PREganglionic POSTganglionic 1 Autonomic peripheral  ganglion 1 2 INvoluntary
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Affe re nt  c arry ne rve  im puls e s  fro m  re c e pto rs  o r s e ns e  o rg ans   to wards  the  C NS Effe re nt c arry ne rve  im puls e s  away from the CNS to effectors such as  smooth, cardiac muscles or glands Somatic motor neuron (Ventral horn) Skeletal muscle Preganglionic neuron (Lateral horn) Autonomic ganglion Smooth, cardiac muscle or glands (e.g. intestine)
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