Sciatic Nerve Flashcards
1
Q
what is the largest nerve in the body?
A
sciatic nerve
2
Q
what nerve roots form the sciatic nerve?
A
L4-S3
3
Q
where is the sciatic nerve derived?
A
lumbosacral plexus
4
Q
describe the anatomical course of the sciatic nerve?
A
- lumbosacral plexus
- leaves pelvis through GSF
- emerges inferiorly to piriformis muscle
- moves through gluteral region
- enters posterior thigh by passing dee to long head of biceps femoris
- apex of popliteal fossa - terminates
5
Q
how does the sciatic nerve terminate?
A
at the apex of the popliteal fossa - bifurcates into tibial and common fibular nerves
6
Q
the sciatic nerve can be described as two nerves bundled together - what are they?
A
tibial and common fibular nerve - 12% of people they separate as they leave the pelvis
7
Q
Label the sciatic nerve
A
