اناٹومی مطالعاتی نوٹ · Abdomen

Lumbar plexus

Formed within the psoas by the anterior rami of L1–L4. Its branches supply the lower abdominal wall and much of the lower limb.

اہم نکات

L1–L4 in the psoas.
Lateral border: iliohypogastric, ilioinguinal, lateral cutaneous of thigh, femoral.
Medial border: obturator + lumbosacral trunk. Front: genitofemoral.
Genitofemoral → cremasteric reflex.
Ventral root: basal-lamina neurons. Dorsal root: neural-crest ganglion cells.
Schwann cells: neural crest.
Nerve: epineurium → perineurium (blood–nerve barrier) → endoneurium.
Cut nerve: Wallerian degeneration; regrows 0.5–3 mm/day.

Branches · Histology · Development · طبی اہمیت

مفت سائن اِن کریں تاکہ اسے 3D ماڈل پر دیکھیں، مکمل نوٹ پڑھیں اور اس پر سوالات کی مشق کریں۔

Snell’s Clinical Anatomy by Regions, 10th ed., ch. 7, PDF pp. 944, 967–970
Inderbir Singh’s Human Embryology, ch. 17, PDF pp. 318, 321, 323–325; ch. 10, PDF p. 144
BRS Cell Biology & Histology, 7th ed., ch. 9, PDF pp. 163–166, 171–172