Where is the origin of the pectoralis minor muscle located?

The origin of the pectoralis minor muscle is located on the 3rd to 5th ribs. This muscle is situated beneath the larger pectoralis major and primarily serves to stabilize the scapula by drawing it anteriorly and inferiorly towards the thoracic wall. The attachment at the 3rd to 5th ribs allows for effective movement in conjunction with the shoulder and upper limb.

In contrast, other listed origins refer to different muscles. The clavicle, sternum, and cartilages of the true ribs are associated with the pectoralis major, while the axillary border of the scapula pertains to the teres minor. The 2nd to 5th thoracic vertebrae is not relevant to the pectoralis minor's origin, as it does not attach to the vertebrae at all. Understanding the anatomical position of muscle origins is essential for effective sports massage, as it influences muscle function and potential injury sites.