قناة سنة ثانية بشري (دفعة 53)

تعرفوا إني نشرح في بايو ولا ؟؟

بيش تسمعو الكلام مره أخرى 🥲😂😂.

A/Ne receptor

ACh receptor

شورت نوت الأوتو .

هكي الشيت الثاني كمل ي شباااب ♥️♥️♥️.

Opposing Effects Summary Eye • SNS → Mydriasis • PNS → Miosis Heart • SNS → ↑ HR & force • PNS → ↓ HR & force Lungs • SNS → Bronchodilation • PNS → Bronchoconstriction GIT / GB / UB / Colon • SNS → Retention • PNS → Evacuation & ↑ motility Genital System • SNS → Ejaculation • PNS → Erection

الفرق بين ال symp و ال parasymp .

Parasympathetic Nervous System (Rest-and-Digest) General Role Conserves energy and maintains normal body functions (anabolic system). 1. Anatomy • Origin: CN III, VII, IX, X + S2–S4 • Long preganglionic fibers → terminal ganglia • Short postganglionic fibers inside organs 2. Parasympathetic Effects Cranial Nerves III (Oculomotor) • Pupil constriction (miosis) • Accommodation for near vision VII (Facial) • Watery saliva (submandibular/sublingual glands) • Lacrimal & nasal secretions IX (Glossopharyngeal) • Watery parotid secretion X (Vagus) Heart • ↓ HR, ↓ contractility, ↓ conduction Lungs • Bronchoconstriction • ↑ mucus secretion GIT • ↑ motility • Relaxation of sphincters • ↑ gastric, pancreatic, and intestinal secretions Gallbladder • Contraction of GB • Relaxation of sphincter of Oddi → bile release Sacral Parasympathetic (Pelvic Nerves) • Defecation (rectal contraction + sphincter relaxation) • Micturition (detrusor contraction + sphincter relaxation) • Erection (vasodilation) • Seminal vesicle & prostate secretion

هذا ال sympathetic كمل ي شباب ♥️.