Nerves of the Lumbar and Sacral Plexus

Question 1

What forms the lumbar plexus?

Answer 1

ventral rami of T12-L4

Question 2

What forms the sacral plexus?

Answer 2

Lumbosacral trunk (part of the ventral ramus of L4 and ventral ramus of L5) 
Ventral rami of S1-S4

Question 3

What roots form the iliohypogastric nerve?

Answer 3

T12, L1

Question 4

What roots form the ilioinguinal nerve?

Answer 4

L1

Question 5

What roots form the genitofemoral nerve?

Answer 5

L1, L2

Question 6

What roots form the lateral femoral cutaneous nerve?

Answer 6

L2, L3

Question 7

What roots form the femoral nerve?

Answer 7

Dorsal division of L2-L4

Question 8

What roots form the obturator nerve?

Answer 8

Ventral division of L2-L4

Question 9

What roots form the saphenous nerve?

Answer 9

L3-L4

Question 10

What roots form the lateral femoral cutaneous nerve?

Answer 10

L2-L3

Question 11

What roots form the superior gluteal nerve?

Answer 11

L4-S1

Question 12

What roots form the nerve to quadratus femoris and gemellus inferior?

Answer 12

L5, S1

Question 13

What roots form the nerve to obturator internus and superior gemellus?

Answer 13

L5, S1

Question 14

What roots form the nerve to piriformis?

Answer 14

branches of anterior rami S1-S2

Question 15

What roots form the inferior gluteal nerve?

Answer 15

L5-S2

Question 16

What roots form the posterior femoral cutaneous nerve?

Answer 16

S1-S3

Question 17

What roots form the pudendal nerve?

Answer 17

S2-S4

Question 18

What roots form the sciatic nerve?

Answer 18

S4-S3

Question 19

What roots form the tibial nerve?

Answer 19

L4-S3

Question 20

What roots form the common fibular nerve?

Answer 20

L4-S2

Question 21

What roots form the superficial fibular nerve?

Answer 21

L4-S1

Question 22

What roots form the deep fibular nerve?

Answer 22

L5