LUMBER PLEXUS
The lumbar plexus is a complex of nerves arises from the ant. rami of the lumbar spinal nerves.
(T12 - L5)
I (twice) got lost on Freeways.
- ↳ Iliohypogastric
- Ilioinguinal
- Genitofemoral n
- lateral femoral cut.
- Obturator n.
- Femoral n.
- T12 — subcostal n.
- motor s: pyrmidalis
- Transverse abdominalis
- iliohypogastric n.
- m.: Internal oblique + transverse abdominis
- cut.: Skin over the pubis
- L1 — ilioinguinal n.
- motor: Internal oblique, Transverse abdominis.
- cut.: skin of the proximal & medial thigh; ♂ scrotum (upper) - ♀ monus pubis + labia majora.
- Ant. division — Genitofemoral n. (L1–L2)
- mot. cremaster
- cut. ♂ scrotum ; ♀ labia majora
- lateral femoral cutaneus n. (L2–L3)
- supply: lateral thigh
- peritoneum.
- Femoral n. (L2–L4)
- cut.: Ant. femoral cut. br.; Ant. thigh saphenous br. (medial lower limb)
- mot: Femoris, iliacus, pectineus, quadriceps.
- obturator. (L2–L4)
- mot: adductor longus, magnus, brevis - Gracilis - Obturator externus.
- cut: medial thigh
- Accessory obturator n. (L3–L4)
- mot: pectinous m.
- cut: skin of hip joint
- lumbosacral trunk. (L4–L5)