Neuroanatomy Draw It To Know It

4. Peripheral Nervous System—Lower Extremity 61

Ventral rami Pelvis, gluteal region, & hip Thigh Leg Foot

Genitofemoral nerve (genital branch - cremaster muscle)

(femoral branch - sensory only)

Obturator nerve

Femoral nerve

Pudendal nerve (perineum and external genitalia)

Sciatic nerve

Peroneal nerve

Tibial nerve

L4 - S2

L4 - S3

L1 - L2

L2 - L3

L2 - L4

L4 - S1

L5 - S2

L4 - S3

L1

S1 - S3

S4 & S2/S3

Posterior cutaneous nerve of the thigh

Superior gluteal nerve (gluteus med. & min., and tensor fasc. lat. m.)

Short rotators of the hip

Inferior gluteal nerve (gluteus maximus muscle)

Ilioinguinal nerve

Iliohypogastric nerve

(Internal oblique and transversus abdominus muscles)

S4 Nerves to levator ani, coccygeus, and sphincter ani externus

S2 - S3 Pelvic splanchnic nervesPerforating cutaneous nerve

Lateral cutaneous nerve of the thigh

DRAWING 4-2 Lumbosacral Plexus — Complete