Question

A major nerve of the lumbar plexus is the ________.

A) femoral iliohypogastric
B) ilioinguinal sciatic

Answer 1

The femoral nerve is a major nerve of the lumbar plexus, which enervates the pelvic region and the anterior leg, giving rise to the saphenous nerve that extends through the anterior lower leg.

Step-by-step explanation:

A major nerve of the lumbar plexus is the femoral nerve. The lumbar plexus arises from all the lumbar spinal nerves and gives rise to nerves enervating the pelvic region and the anterior leg. The femoral nerve is one of the major nerves from this plexus, which also gives rise to the saphenous nerve as a branch that extends through the anterior lower leg. In contrast, the sciatic nerve is a systemic nerve from the sacral plexus, not the lumbar plexus. It is a combination of the tibial nerve and the fibular nerve, and extends across the hip joint and gluteal region into the upper posterior leg. This is an important distinction because the lumbar and sacral plexuses supply different regions of the lower body.

Answer 2

Option A) Femoral nerve.

Explanation:

• The lumbar plexus is a network of nerves that is responsible for transmission of the signals in the skin and musculature of the lower limb to brain.
• The largest nerve of the lumbar plexus is the femoral nerve, which is connected to the anterior(inner) thigh muscles and some part of the skin distal to the inguinal ligament.
• Whereas, the ilioinguinal nerve is located the anterior surface of the scrotum(in males) or labia majora(in females).

Result: Option A) is the correct answer.