Question

What is the action and nerve supply of superior gemelli?

a) Action: Abducts the hip joint, Nerve supply: Femoral nerve
b) Action: Flexes the elbow joint, Nerve supply: Musculocutaneous nerve
c) Action: Flexes the knee joint, Nerve supply: Tibial nerve
d) Action: Laterally rotates the hip joint, Nerve supply: Nerve to obturator internus

Answer 1

The superior gemellus muscle laterally rotates the femur at the hip joint and is supplied by the nerve to obturator internus.

Step-by-step explanation:

The action of the superior gemellus muscle is to laterally rotate the femur at the hip joint. Located deep to the gluteus maximus on the lateral surface of the thigh, the superior gemellus aids in this rotational movement. Its primary action is to laterally rotate the femur at the hip joint. The nerve supply for the superior gemellus muscle is the nerve to obturator internus. The nerve supply of the superior gemellus is the nerve to obturator internus, which is responsible for innervating this muscle. Hence, the correct option is d) Action: Laterally rotates the hip joint, Nerve supply: Nerve to obturator internus.