PT 513 Lecture Notes - Lecture 37: Internal Obturator Muscle, Lumbosacral Plexus, Quadratus Femoris Muscle

• School: Quinnipiac University
• Department: Physical Therapy
• Course: PT 513
• Professor: Katherine Grevelding

Document Summary

The pelvis: nervous system input: lumbosacral plexus review, lumbar plexus passes anterior to pelvis (with exception of obturator nerve, spinal segments: l1-l4 (l4 sends segments to lumbosacral trunk) Terminal branches (6): iliohypogastric (l1, ilioinguinal (l1, genitofemoral (l1-2, lateral femoral cutaneous (l2-3, femoral (l2-4, obturator (l2-4) Branches (t12-l4: psoas major, quadratus lumborum, iliacus, intertransversarii lumborum, sacral plexus passes within the pelvis. Innervates: le via sacral plexus, perineum via pudendal plexus, coccygeal region via coccygeal plexus, spinal segments: l4-s4. Input from sympathetic trunk (thoracic and lumbar: parasympathetic nervous system rest and digest. Ischiocavernosus: bulbospongiosus, erectile tissue, somatic (voluntary muscles) and ans input, afferent feedback through pudendal nerve or cognitive stimulation, parasympathetic feedback causes ducts to contract (vasodilation, sns increases tone in sphincter to prevent sperm from entering bladder and. Ischiocavernosus and bulbospongiosus (via pudendal nerve) contract: case examples prevent urine from being expelled, patient is 24-year-old male s/p c7 complete spinal cord injury.