Question

What is the function of each of these muscles?

stapedius:
sartorius:
gluteus maximus:

Answer 1

The stapedius muscle stabilizes the stapes bone in the ear, the sartorius aids in hip and knee movements, and the gluteus maximus extends the femur at the hip joint.

Step-by-step explanation:

The muscles mentioned each have specific functions:

• The stapedius muscle is the smallest skeletal muscle in the human body and it serves to stabilize the stapes bone in the ear to prevent damage to the inner ear from loud noises.
• The sartorius is the longest muscle in the human body; it facilitates the flexion, abduction, and lateral rotation of the hip, as well as the flexion of the knee, which enables movements like crossing the legs.
• The gluteus maximus is the largest muscle in the gluteal region and it extends the femur at the hip joint, enabling activities like climbing stairs or standing up from a sitting position.

The intrinsic skeletal muscles of the back and neck, along with the muscles of the abdominal wall and thorax, help maintain posture, facilitate movement, and stabilize different parts of the body's trunk.