The Deep Gluteal Muscles | Anatomy, Origins, Insertions, Etc.

The video tutorial provides an in-depth look at the gluteal muscles, focusing on their roles as lateral rotators of the hip. It covers the major gluteal muscles and the deep gluteal muscles, detailing their origins, insertions, innervations, and functions. The piriformis, gemellus superior, obturator internus, inferior gemellus, quadratus femoris, and obturator externus are discussed, highlighting their contributions to hip rotation and auxiliary functions like hip extension and adduction.

What is the primary function of the deep gluteal muscles discussed in the introduction?

• Extension of the knee

• Lateral rotation of the hip

• Adduction of the thigh

• Flexion of the hip

Which muscle is uniquely known for originating on the sacrum?

• Obturator internus

• Quadratus femoris

• Piriformis

• Gluteus maximus

What is the auxiliary function of the piriformis muscle?

• Hip flexion

• Hip extension

• Knee flexion

• Thigh adduction

Where does the superior gemellus muscle originate?

• Ischial tuberosity

• Greater trochanter

• Obturator membrane

• Ischial spine

Which nerve supplies both the superior gemellus and obturator internus?

• Nerve to quadratus femoris

• Femoral nerve

• Nerve to obturator internus

• Sciatic nerve

What is the insertion point for the inferior gemellus muscle?

• Trochanteric fossa

• Intertrochanteric crest

• Lesser trochanter

• Greater trochanter

Which muscle shares its nerve supply with the quadratus femoris?

• Piriformis

• Obturator externus

• Inferior gemellus

• Superior gemellus

Where does the obturator externus muscle insert?

• Greater trochanter

• Trochanteric fossa

• Ischial spine

• Obturator membrane

What auxiliary function does the obturator externus assist with?

• Hip abduction

• Hip adduction

• Knee extension

• Thigh flexion

Which nerve innervates the obturator externus?

• Nerve to piriformis

• Femoral nerve

• Sciatic nerve

• Obturator nerve