Iliacus is innervated by which nerve?

Iliacus is innervated by which nerve?

• A. Sciatic Nerve
• B. Femoral Nerve
• C. Obturator Nerve
• D. Superior Gluteal Nerve

Answer: (B)

The iliacus is innervated by the femoral nerve, which carries motor fibers from the L2–L4 portions of the lumbar plexus. The femoral nerve travels through the iliac region, passes under the inguinal ligament into the thigh, and gives muscular branches to the iliacus in the iliac fossa. This innervation fits the muscle’s role as a primary hip flexor, especially when working with psoas major as part of the iliopsoas group. The other nerves don’t reach the iliacus: the sciatic nerve serves posterior thigh and leg muscles, the obturator nerve mainly supplies most of the medial thigh adductors, and the superior gluteal nerve supplies the gluteal muscles.

The iliacus is innervated by the femoral nerve, which carries motor fibers from the L2–L4 portions of the lumbar plexus. The femoral nerve travels through the iliac region, passes under the inguinal ligament into the thigh, and gives muscular branches to the iliacus in the iliac fossa. This innervation fits the muscle’s role as a primary hip flexor, especially when working with psoas major as part of the iliopsoas group. The other nerves don’t reach the iliacus: the sciatic nerve serves posterior thigh and leg muscles, the obturator nerve mainly supplies most of the medial thigh adductors, and the superior gluteal nerve supplies the gluteal muscles.