Nerves of the Pelvis and Gluteal Region Flashcards
what is the lumbar plexus formed by?
ventral primary rami of L1-L3 and part of L4
and a contribution from the ventral primary rami of T12
what is the sacral plexus formed by?
part of L4 and all of L5, S1-S3, and part of S4
what is the coccygeal plexus formed by?
S4, S5 and anterior coccygeal rami
what muscle is the lumbar plexus found in?
psoas major muscle
the anterior division of the lumbar plexus has what branches?.
(for flexors)
obturator n. L2-4
accessory obturator n. L3-4
the posterior division of the lumbar plexus has what branches?.
(for extensors and abductors)
genitofemoral L1-2
lateral femoral cutaneous L2,3
femoral L2-4
what levels is iliohypogastric?
L1
what level is ilioinguinal?
L1
which nerve passes thru the psoas major to run on its venral surface?
genitofemoral L1-2
what nerve levels are lateral femoral cutaneous n.?
L2-L3
what nerve levels are obturator nerve?
L2-4
*pases medial to psoas major muscle
what nerve levels are accessory obturator nr.?
L3-4
what nerve levels are femoral n.?
L2-4
what nerve levels are the lumbosacral trunk?
L4-5
what is the nerve furcalis?
anterior (ventral) ramus of L4 because it is divded btwn the lumbar and sacral plexuses