Question

Consider addressing the following topics:

How the shoulder girdle movement is related to the total movement of the shoulder.

Explain how the sternoclavicular joint helps with some movements.

Answer 1

1.

Shoulder gridle is formed by combination of bones, and it combines with arm present in opposite sides. Shoulder gridle movement contain six different movements, they are depression(it helps in the downwards motion of sholder gridle), elevation(it helps in the updirection movement of sholder gridle), upward and downward rotations(movement of scapula towards ribcage), abduction(scapula move from spinal column) and adduction(scapula move towards spinal column). Muscles and joints present in the shoulder gridle helps in the movement of shoulder. Rhomboid muscles, pectoralis minor, levator scapulae are some of the muscles present in shoulder gridle.

2.

Sternoclavicular joint is the portion, which connect to the entire shoulder and upper extremity(axial skeleton). Clavicle and scapula motion or movement is performed with the help of sternoclavicular joint. For an example, we are massaging our head, it is possible because of sternoclavicular joint. Sternoclavicular joint is the only one joint connected to axial skeleton.