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16 Cards in this Set
- Front
- Back
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general somatic afferents |
sensory from 'body' |
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general somatic efferents |
motor to 'body' (ie muscles) |
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components of the lumbosacral plexus |
lumbar plexus L1-L4 Sacral plexus S1-S4 |
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(Lumbar Plexus) -2 branches emerge from lateral side of psoas major (L1) |
iliohypogastric n _to side of putt and pubis) ilioinguinal n (to anterior thigh, scrotum/labia majora) |
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(Lumbar Plexus) nerve that emerges on anterior surface of psoas major m |
genitofemoral n |
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branches of genitofemoral n |
genital branch femoral branch |
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nerve: enters inguinal canal supplies scrotum and labia majora GSA - supplies cremaster m |
genital branch of genitofemoral n |
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nerve: enters femoral sheath supplies skin over femoral triangle |
femoral branch of genitofemoral n. |
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(Lumbar Plexus) -L2-L4 -largest branch of lumbar plexus -emerges from lateral side of psoas major m |
femoral n |
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(Lumbar Plexus) supplies sartorius m, quadriceps femoris m -terminates as : saphenous n (to edial thigh and foot) |
femoral n |
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(Lumbar Plexus) -emerges from medial side of psoas major -descends along lateral wall of pelvis, branches anterior and posterior branch supplies (GSE): (Anterior branch)- adductor longus, gracilis, adductor brevis (posterior branch)- obturator externus, adductor magnus ---- skin on medial thigh (GSA--- |
obturator n |
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(Sacral Plexus S1-S4) -passes through greater sciatic notch above piriformis m supplies gluteus medius , gluteus minimus, tensor faciae latae (GSE) |
superior gluteal n (L4-S1, borrows fibers from L4) |
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(Sacral Plexus) -(L5-S2) -passes through greater sciatic notch below piriformis supplies motor to gluteus maximus |
inferior gluteal n |
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(Sacral Plexus) -supplies skin on buttock (GSA), skin of external genitalia (GSA) via perineal branches, skin on posterior surface of leg and thigh |
posterior femoral cutaneous (runs with sciatic n) |
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(Sacral Plexus) -gives off common peroneal n , turns into tibial n -largest nerve in the body |
sciatic n |
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(Sacral Plexus) -exits pelvis through greater sciatic foramen inferior to piriformis (usually) -descends between greater trochanter and ischial tuberosity -lies on gemelli muscles, obturator internus m, quadratus femoris m |
sciatic n |
