Autonomic nervous system (ANS-2)

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Information about Autonomic nervous system (ANS-2)

Published on September 28, 2015

Author: medonaeem99

Source: slideshare.net

1. physiology Si plified BY…. Dr.M7mdEl-Bshany

2. • Origin of sympathetic. • Origin of parasympathetic. • Autonomic ganglia. Objectives

3. Edinger-westphal nucleus Superior salivary nucleus Inferior salivary nucleus Dorsal vagal nucleus

4. Autonomic Ganglia Def. Collection of cell bodies of neurons outside CNS function Relay station. Distributing centers … sypmathetic Para-sympathetic 1:32 1:1 Pre-ganglionic ganglion Post-ganglionic

5. Lateral(paravertebral) Ganglia  22-24 ganglia each side.  Extend fro base of skull to coccyx.  Relay for sympathetic pre-ganglionic fibers.  3 cervical(superior , middle , inferior). -12 thoracic. - 5 lumbar. - 5 sacral. - 1 coccygeal. lateral(para-vertebral) Ganglia collateral(pre-vertebral) Ganglia  Present mainly in abdomen  mid-way () spinal cord & viscera  Relay of sympathetic preganglionic fibers).  Related to branches of Aorta . - celiac. - superior mesenteric. - inferior mesenteric.

6. Terminal Ganglia  Small ganglia lie close to or in wall of effector organ.  Has short post-ganglionic fibers.  Relay for sympathetic & parasympathetic preganglionic fibers. Parasympathetic terminal Ganglia  Ciliary ganglia→ occulo-motor.  Shpeno-palatine ganglia → facial n.  Submandibular ganglia → facial n.  Otic ganglia → glosso-pharyngeal n.  Terminal ganglia of vagus

7. Per-ganglionic post-ganglionic Origin Inside CNS Outside CNS End At ganglia At effector organ Type Thin myelinated (type B) Non-myelinated (type C) Colour White Grey NO. Few more Chemical transitter Acetyl-choline Symp …… adrenaline OR acetyl-choline. Para-symp …….. Acetyl-choline Per-ganglionic neurons VS post-ganglionic neurons

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