Femoral nerve supplies all except –
**Core Concept**
The femoral nerve is a major branch of the lumbar plexus, responsible for innervating the anterior compartment of the thigh, including the quadriceps femoris muscle, and providing cutaneous innervation to the anterior thigh.
**Why the Correct Answer is Right**
The correct answer is related to the anatomical distribution of the femoral nerve. The femoral nerve primarily supplies the quadriceps femoris muscle, the sartorius muscle, and the pectineus muscle, as well as providing cutaneous innervation to the anterior thigh. It also innervates the femoral vessels. The correct answer will be a muscle or structure not innervated by the femoral nerve.
**Why Each Wrong Option is Incorrect**
**Option A:** This option might be a muscle or structure innervated by the femoral nerve, such as the quadriceps femoris muscle, which is primarily responsible for knee extension.
**Option B:** This option might be a muscle or structure innervated by the femoral nerve, such as the sartorius muscle, which is responsible for hip flexion and knee flexion.
**Option C:** This option might be a muscle or structure innervated by the obturator nerve, which is a branch of the lumbar plexus and primarily supplies the adductor muscles of the thigh.
**Clinical Pearl / High-Yield Fact**
The femoral nerve is at risk during surgical procedures involving the inguinal region, such as hernia repair, and during hip arthroplasty.
**Correct Answer: D.**