Lumbar Plexus

Question 1

Psoas Major muscle

Answer 1

Lumbar Nerves 1-3

Question 2

Psoas minor muscle

Answer 2

Lumbar Nerves 1

Question 3

Iliacus Muscle

Answer 3

Femoral N (L2, L3)

Question 4

Quadratus Lumborum Muscle

Answer 4

Subcostal N, Lumbar Nerves 1-4

Question 5

Lumbar plexus

Answer 5

Anterior primary rami L1-L3 and part of L4

Question 6

Iliohypogastric N

Answer 6

L1 - Supplies the skin covering the pubis and gluteal region

Question 7

Ilioinguinal N

Answer 7

Accompanies spermatic cord or round ligament of uterus thru inguinal canal

L1-sensory to skin of scrotum or labia major and thigh

Question 8

Femoral N

Answer 8

L2, L3, L4 - Supplies muscles and skin of thigh

Question 9

Lateral cutaneous N of thigh

Answer 9

L2, L3 - Supplies skin of anterior and lateral aspects of thigh

Question 10

Genitofemoral N

Answer 10

L1, L2
Genital branch - creamaster muscle
Femoral branch - supplies skin over femoral triangle

Question 11

Obturator N

Answer 11

L2, L3, L4 - Supplies muscles and skin of medial surface of thigh