Lower limb nerves

Question 1

Which nerve roots does the femoral nerve arise from?

Answer 1

L2-4 (posterior division)

Question 2

Which nerve roots does the obturator nerve arise from?

Answer 2

L2-4 (anterior division)

Question 3

Which nerve roots does the sciatic nerve arise from?

Answer 3

L4, L5, S1-3

Question 4

What landmark does the femoral nerve pass under to reach the lower limb?

Answer 4

Inguinal ligament

Question 5

What landmark does the obturator nerve pass through to reach the lower limb?

Answer 5

Obturator foramen

Question 6

What landmark does the sciatic nerve pass through to reach the lower limb?

Answer 6

Greater sciatic foramen

Question 7

What is the terminal branch of the femoral nerve, and what does it innervate?

Answer 7

Saphenous nerve
Cutaneous supply to anteromedial leg and medial foot

Question 8

What does the sciatic nerve branch into?

Answer 8

Tibial nerve and common peroneal nerve

Question 9

What does the tibial nerve supply?

Answer 9

Posterior compartment of the leg

Question 10

What does the common peroneal nerve branch into?

Answer 10

Superficial and deep peroneal nerves

Question 11

What are the terminal branches of the tibial nerve?

Answer 11

Medial and lateral plantar nerves

Question 12

What nerve roots form the lumbar plexus?

Answer 12

L1-L4

Question 13

What nerve roots form the sacral plexus?

Answer 13

L4-S4

Question 14

What are the nerve roots of the superior gluteal nerve?

Answer 14

L4-S1

Question 15

What are the nerve roots of the inferior gluteal nerve?

Answer 15

L5-S2