Detailed Study of the Lumbar Plexus and Associated Nerves in Human Anatomy

Ilioinguinal nerve, iliohypogastric nerve, genitofemoral nerve, lateral cutaneous nerve of the thigh, obturator nerve, femoral nerve, and lumbosacral trunk

What are the branches of the lumbar plexus?

L1-L5

What spinal levels make up the lumbar plexus?

L1

What spinal levels make up the ilioinguinal and iliohypogastric nerves?

Innervate abdominal muscles and cutaneous sensory to pubic/inguinal region

What do the ilioinguinal and iliohypogastric nerves do?

L1-L2

What spinal levels make up the genitofemoral nerve?

Femoral branch and genital branch

What are the branches of the genitofemoral nerve?

Cutaneous sensory of upper anterior thigh

What does the femoral branch of the genitofemoral nerve do?

Cutaneous sensory to external genitalia

What does the genital branch of the genitofemoral nerve do?

L2-L3

What spinal levels make up the lateral cutaneous nerve of the thigh?

Cutaneous sensory to anterolateral thigh

What does the lateral cutaneous nerve of the thigh do?

L2-L4

What spinal levels make up the obturator nerve?

Innervate medial compartment thigh muscles (adductors) and cutaneous sensory of medial thigh

What does the obturator nerve do?

L2-L4

What spinal levels make up the femoral nerve?

Innervates iliacus, hip flexors, and knee extensors and cutaneous sensory of anterior thigh

What does the femoral nerve do?

L4-L5

What spinal levels make up the lumbosacral trunk?

Combine with S1-S3 anterior rami to form the sciatic nerve

What does the lumbosacral trunk do?