Sacral plexus - Week 3

Question 1

Which vertebrae contain the sacral plexus?

Answer 1

L4 - S4

Question 2

Which vertebrae contains the sciatic nerve?

Answer 2

L4 - S3

Question 3

Superior gluteal nerve origin

Answer 3

L4 - S1

Question 4

Inferior gluteal nerve origin

Answer 4

L5 - S2

Question 5

Posterior femoral cutaneous origin

Answer 5

S1 - S3

Question 6

Pudendal nerve origin

Answer 6

S2 - S4

Question 7

Sciatic nerve innervates which muscles

Answer 7

Posterior thigh - Hamstrings (hip extensors, knee flexors)

Question 8

Your patient survived a motor vehicle accident, but cannot extend their knee, which nerve do you expect has been damaged?

Answer 8

Femoral nerve