Question

What are the actions of Obturator internus?

a) Flexes the shoulder joint
b) Extends the knee joint
c) Abducts the hip joint
d) Laterally rotates the hip joint

Answer 1

The obturator internus muscles laterally rotates the hip joint.

Step-by-step explanation:

The actions of the Obturator internus are:

1. Lateral rotation of the hip joint

The obturator internus is a lateral rotator of the femur at the hip joint. It helps in twisting the thigh and lower leg outward, as well as maintaining posture.

The actions of the Obturator internus include the lateral rotation of the hip joint. This muscle is located deep to the gluteus maximus on the lateral surface of the thigh, and aside from its primary function of laterally rotating the femur at the hip, it also helps to stabilize the hip joint. Among the options provided, the correct action of the Obturator internus is d) Laterally rotates the hip joint.