Sacral plexus Flashcards Preview

anatomy year 3 exam > Sacral plexus > Flashcards

Flashcards in Sacral plexus Deck (10)
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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