Root Values/Innervations: Lumbar Plexus of Nerves

Question 1

subcostal

Answer 1

T12

skin over hip

Question 2

ilioinguinal

Answer 2

L1
skin over the root of the penis and upper part of the scrotum (male), skin covering the mons pubis and labium majus (female)

Question 3

iliohypogastric

Answer 3

T12-L1

innervates kin over the lateral gluteal region and above the pubis

Question 4

genitofemoral

Answer 4

L1-L2
on anterior surface, psoas major m. 
divides:
     genital branch > cremaster m.
     femoral branch > skin inferior & medial to inguinal l.

Question 5

femoral

Answer 5

L2-L4

innervates iliacus m.

Question 6

obdurator

Answer 6

L2-L4

sensory innervation of the skin of the medial aspect of the thigh

Question 7

lateral femoral cutaneous

Answer 7

L2-L3

skin on lateral aspect of thigh