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7 Cards in this Set
- Front
- Back
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Nerves of lumbar plexus and location |
Location = posterior part of the psoas major Consists of anterior rami of L1-L4 nerves Receive gray rami communicantes from sympathetic trunks |
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Major nerves of lumbar plexus (bar think barbell think izzy) |
Izzy Loves Fondling Gigantic Oiled Lats Ilioinguinal and Iliohypogastric nerves Lateral cutaneous nerve of thigh Femoral nerve Genitofemoral nerve Obturator nerve Lumbosacral trunk
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Ilioinguinal and Iliohypogastric nerves (spinal nerve origin, path, and supply) |
Anterior ramus of L1 Enter the abdomen posterior to the medial arcuate ligament and anterior to the quadratus lumborum muscle Pierce the transversus abdominus near the anterior superior iliac spine pass through internal and external oblique muscles Supplies the skin of the suprapubic and inguinal regions |
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Lateral cutaneous nerve of the thigh (spinal nerve origin, path, and supply) |
L2 and L3 Runs inferolaterally on the iliacus muscle Enters the thigh posterior to inguinal ligament just medial to the anterior superior iliac spine Supplies the skin on the anterolateral surface of the thigh |
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Femoral nerve (spinal nerve origin, path, and innervation) |
L2-L4 Emerges from lateral border of the psoas Innervates the iliacus muscle and extensor muscles of the knee |
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Genitofemoral nerve |
L1 and L2 Pierces the anterior surface of the psoas major muscle Runs inferiorly on it deep to psoas fascia Divides into femoral and genital branches just lateral to the common and external iliac arteries |
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Lumbosacral trunk |
L4 and L5 Passes over ala of sacrum and descends into pelvis Takes part in formation of sacral plexus along w/ anterior rami of S1-S4 |
