THE LUMBOSACRAL PLEXUS 3112021 SCNM ANAT 604 The
THE LUMBOSACRAL PLEXUS 3/11/2021 SCNM, ANAT 604, The Lumbosacral Plexus 1
SUBCOSTAL NERVE • ANTERIOR RAMUS OF T 12 3/11/2021 SCNM, ANAT 604, The Lumbosacral Plexus 2
LUMBOSACRAL PLEXUS • FORMED FROM TWO PLEXI • THE LUMBAR PLEXUS (L 1 -L 5) • THE SACRAL PLEXUS (S 1 -S 3) 3/11/2021 SCNM, ANAT 604, The Lumbosacral Plexus 3
LUMBAR PLEXUS • ROOTS – ANT. PRIMARY RAMI L 1 -L 5 • NERVES –(T 12) L 1 • ILIOHYPOGASTRIC • ILIOINGUINAL –L 1 & L 2 • GENITOFEMORAL 3/11/2021 SCNM, ANAT 604, The Lumbosacral Plexus 4
LUMBAR PLEXUS • ANT. DIV. L 2 -L 4 – OBTURATOR N. – ACC. OBTURATOR N. • POST. DIV. L 2 -L 4 – L 2 & L 3: LAT. FEMORAL CUT. N. – L 2 -L 4: FEMORAL N. • LUMBOSACRAL TR. – BR. L 4 WITH L 5 – TO SACRAL PLEXUS 3/11/2021 SCNM, ANAT 604, The Lumbosacral Plexus 5
SACRAL PLEXUS 3/11/2021 SCNM, ANAT 604, The Lumbosacral Plexus 6
NERVES • ANTERIOR PRIMARY RAMI OF S 1 -S 3 PLUS: • LUMBOSACRAL TRUNK (L 4 & L 5) • ANT. & POST. DIV. – POST. FEMORAL CUT. N. – SCIATIC N. • TIBIAL N. • COM. PERONEAL N. 3/11/2021 SCNM, ANAT 604, The Lumbosacral Plexus 7
ANTERIOR DIVISIONS • QUADRATUS FEMORIS N. • OBTURATOR INTERNUS N. • PUDENDAL N. • LEVATOR ANI & COCCYGEUS N. • PERINEAL BR. • TIBIAL N. 3/11/2021 SCNM, ANAT 604, The Lumbosacral Plexus 8
POSTERIOR DIVISIONS • • SUP. GLUTEAL N. INF. GLUTEAL N. PIRIFORMIS N. COM. PERINEAL N. – DEEP PERONEAL N. – SUP. PERONEAL N. 3/11/2021 SCNM, ANAT 604, The Lumbosacral Plexus 9
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