What is one of the primary actions of the pectoralis minor?

What is one of the primary actions of the pectoralis minor?

• A. Scapula elevation
• B. Scapula retraction
• C. Scapula depression
• D. Scapula hyperextension

Answer: (C)

The pectoralis minor primarily acts to depress the scapula. This muscle is located beneath the pectoralis major and plays a crucial role in the movement of the scapula, particularly during activities involving shoulder mobility and positioning. By pulling the scapula downward, the pectoralis minor assists in stabilizing the shoulder girdle and lowering the arm in various movements. In addition to depression, the muscle also helps in scapular protraction and may contribute to shoulder flexion and the forward movement of the scapula, especially when the arm is raised. However, its primary action is indeed depression, which is particularly noticeable when the arm is in a raised position. This function helps in movements such as reaching downward or pushing during various exercises.

The pectoralis minor primarily acts to depress the scapula. This muscle is located beneath the pectoralis major and plays a crucial role in the movement of the scapula, particularly during activities involving shoulder mobility and positioning. By pulling the scapula downward, the pectoralis minor assists in stabilizing the shoulder girdle and lowering the arm in various movements.

In addition to depression, the muscle also helps in scapular protraction and may contribute to shoulder flexion and the forward movement of the scapula, especially when the arm is raised. However, its primary action is indeed depression, which is particularly noticeable when the arm is in a raised position. This function helps in movements such as reaching downward or pushing during various exercises.