Sacral plexus Flashcards
1
Q
which muscle does the plexus lie on?
A
piriformis muscle
2
Q
the sacral plexus is formed by union of which ventral rami spinal nerves?
A
L4-5, S1-4
3
Q
where does it supply?
A
posterior aspect of lower limb and perineum
4
Q
what are the 2 main branches?
A
main branch to LL = sciatic nerve, main branch to perineum = pudendal nerve
5
Q
root value of superior gluteal nerve?
A
L4-S1
6
Q
root value of inferior gluteal nerve?
A
L5-S2
7
Q
which 3 muscles are supplied by superior gluteal nerve?
A
gluteus minimus and mediu and tensor fasciae latae
8
Q
root values of sciatic nerve?
A
L4-S3
9
Q
where does sciatic nerve pass through?
A
greater sciatic foramen
10
Q
where does the sciatic nerve and into which nerves?
A
divides at popliteal fossa into the tibial and common fibular nerves
