The Lumbosacral Plexus and Peripheral Nerves of The Lower Limb

Question 1

List the nerves from L1.

Answer 1

iliohypogastric

ilioinguinal

Question 2

The genitofemoral nerve has which roots?

Answer 2

L1

L2

Question 3

Posterior divisions of L2 and L3 form what nerve?

Answer 3

lateral cutaneous of the thigh

Question 4

Posterior divisions of L2, L3 AND L4 form what nerve?

Answer 4

femoral nerve

Question 5

The obturator nerve is formed of the (?) divisions of what nerve roots?

Answer 5

anterior
L2
L3
L4

Question 6

The lumbosacral trunk is formed from which roots (anterior rami)?

Answer 6

L4

L5

Question 7

What are roots of the tibial nerve (PART OF SCIATIC)?

Answer 7

L4
L5
S1
S2
S3

Question 8

What are roots of the common fibular nerve (PART OF SCIATIC)?

Answer 8

L4
L5
S1
S2

Question 9

What are roots of the sciatic nerve?

Answer 9

L4
L5
S1
S2
S3

Question 10

What nerve is formed from branches from the posterior divisions of L4, L5, S1?

Answer 10

superior gluteal

Question 11

What nerve is formed from branches from the posterior divisions of L5, S1, S2?

Answer 11

inferior gluteal

Question 12

What nerve is formed from branches from the posterior divisions of S1, S2?

Answer 12

nerve to piriformis

Question 13

What nerve is formed from branches from the anterior divisions of S2, S3, S4?

Answer 13

pudendal