functions of sympathetic nervous system simplified physiology دي عباره عن مجموعه من الفيديوهات بنشرح فيها فسيولوجي بشكل مبسط وسهل تقدر تذاكر منها تقدرو تتابعوا باقي الفيديوهات علي قناتنا https://www.youtube.com/playlist?list=PLrkqYOkxk2KKAxHlRwZ8aWXkBq2KCvU_B وكمان تقدروا تتابعو الجديد علي صفحتنا ع الفيس بوك https://www.facebook.com/simplifiedphysiology ولو في اي استفسار https://www.facebook.com/medo.naeem99 http://ask.fm/medonaeem99

1. physiology
Si plified
BY….
Dr.M7md El-Bshany

2. • Sympathetic supply to Head & Neck.
• Sympathetic supply to Thorax.
• Sympathetic supply to Abdomen.
• Sympathetic supply to Pelvis.
• Sympathetic supply to somatic structure.
Objectives

3. Sympathetic supply to Head & Neck
Eye Salivary gland
Cerebral vessels Skin

4. Sympathetic supply to Head & Neck
Salivary gland
Vaso-constriction of blood vessels.
Trophic secretion.
Contraction of myo-epithelial cells.

5. skin
Sympathetic supply to Head & Neck
VC mainly.
Contraction of pilo-erector ms→Hair erection.
 Sweet secretion.
Cerebral vessels
Mild VC.

6. Horner syndrome.
Ptosis.
Miosis.
Enophthalus.
Anhydrosis.
flushing

7. Sympathetic supply to Thorax.
Heart Lung
 ↑ heart rate ,contraction
,conductivity , excitability.
 Coronary vessels
Direct effect → VC
Indirect effect → VD
 Broncho-dilatation.
 ↓Mucous secretion.
 VC .

8. Sympathetic supply to Abdomen.

9. Sympathetic supply to Pelvis.

10. Sympathetic supply to Skin & skeletal ms.
Orbelli phenomenon
Symp. stimulation to skeletal lead to
• better contraction ,
• delay fatigue ,
• early recovery after fatige.
Mechanism
 Vaso-dilatation.
 ↑Glycogenolysis.
 ↑Sensitivity of motor end plate.