The shoulder

2. a traumatic sprain to the AC joint usually caused by a direct blow to shoulder joint
4. Mobility with steadiness of a joint
6. Pain that is felt in one body are (such as the shoulder) but originates everywhere
7. the area that provides movement of the scapula over the back side of the rib cage
10. the upper portion of the humerus bone where the bone attached to the scapula
12. Of the humerus that occurs in the anterior inferior direction
16. an injury caused by stretching or compressing the brachial plexus
17. indentation of the posterior humeral head (visible on x-ray) resulting from the humerus hitting the glenoid during dislocation
18. a group of peripheral nerves that exit the spinal cord and extends from the vertebrae into the shoulder
20. A condition that occurs when the space between the humeral head below and acromion above and become narrowed

1. the tissue that connects the biceps muscle to the shoulder griddle
3. a collective set of four deep muscles of the glenohumeral joint
5. the area where the clavicle and sternum connect
8. the joint form by the acromion of the scapula and clavicle.
9. acting together a group of muscles act together to enhance the movement of a joint or limb
11. Two forces acting in opposite directions to rotate a part around an axis
13. The lateral triangular projection of the spine of the scapula that forms the point of the shoulder and articulates with the clavicle
14. a ring of cartilage attached to the margin of the glenoid cavity of the scapula
15. fossa a slightly concave projection of the scapula
19. the synovial ball-and-socket joint of the shoulder