lumbar and sacral plexus

Question 1

what forms of the lumbar plexus?

Answer 1

anterior rami of L1 - L4

Question 2

what are the 6 nerves of lumbar plexus?

Answer 2

I - iliohypogastric
Imagine - ilioinguinal
Getting - genitofemoral
Laid - lateral femoral cutaneous
On - obturator
Fridays -femoral

Question 3

what are the nerve roots of the nerves of the lumbar plexus?

Answer 3

2 from 1, 2 from 2, 2 from 3:
2 from 1 = iliohypogastric + ilioinguinal from anterior rami of L1
2 from 2 = genitofemoral from the anterior rami of L1 + L2
2 from 2 = lateral femoral cutaneous from the anterior rami of L2 + L3
2 from 3 = obturator and femoral from the anterior rami of L2-L4

Question 4

what forms the sacral plexus?

Answer 4

anterior rami of L4 - S4

Question 5

what are the nerves of the sacral plexus?

Answer 5

superior gluteal nerve
inferior gluteal nerve
posterior femoral
pudendal

Question 6

what are the nerve roots of the nerves of the sacral plexus?

Answer 6

superior gluteal (+ nerve to quadratus femoris) = anterior rami of L4-S1
inferior gluteal (+ nerve to obturator internus) = anteiror rami of L5-S2
posterior femoral cutaneous nerve = anterior rami of S1-S3
puderndal nerve = anterior rami of S2-S4
sciatic nerve = anterior rami of L4-S3
nerve to piriformis = anterior rami of S1+S2

Question 7

Of the sciatic nerve, what are the nerve roots for the common fibular and tibial nerve?

Answer 7

Common fibular = L5-S2
Tibial = L4 - S3