Which muscles are innervated by the cranial gluteal nerve?

• A. Tensor fascia latae, middle gluteal, piriformis, deep gluteal
• B. Superficial gluteal and tensor fascia latae
• C. Rectus femoris and vastus medialis
• D. Sartorius and gracilis

Answer: (A)

The cranial gluteal nerve predominantly innervates the muscles involved in hip extension and abduction, which are essential for stabilizing the pelvis and facilitating movements like walking and running. The correct choice includes the tensor fascia latae, middle gluteal, piriformis, and deep gluteal muscles, all of which are crucial for these functions.

The tensor fascia latae assists in stabilizing the hip and knee through the iliotibial band, while the middle gluteal and deep gluteal muscles are primarily responsible for hip abduction and medial rotation. The piriformis also plays a role in hip stabilization and external rotation. Therefore, all the muscles listed in the correct answer are directly linked to functions that are essential for maintaining effective locomotion and providing stability during movement.

Other options mention muscles not innervated by the cranial gluteal nerve. For instance, the superficial gluteal, while part of the gluteal muscle group, receives innervation from another source. The muscles listed in the remaining options, like rectus femoris, vastus medialis, sartorius, and gracilis, are innervated by the femoral nerve, indicating a different functional role pertaining to extension of the knee