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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