Shoulder Joint Ligaments and "rotator cuff" muscles

Question 1

Shoulder Joint

Answer 1

Somewhat unstable due to the large size of the humeral head in realted to the shallow glenoid cavity, and the flexible structure of the joint capsule.

Question 2

Shoulder

Answer 2

Stability provided by the Tonus and tendons of the surrounding shoulder muscles as well as the supportive ligaments of the joint

Question 3

Should joint

Answer 3

Represents the union of the clavicle with the acromion process and coracoid process of the scapula

Question 4

Humerus

Answer 4

Articulates with the glenoid cavity of the scapula to form a synovial lined ball and socket joint

Question 5

Coracoclavicular Ligament

Answer 5

A double ligament that unites the coracoid process of the scapula with the clavicle and is an extremely strong structure, providing tremendous stability to the joint

Question 6

Acromioclavicular ligament

Answer 6

Location: passes fromt he acromion process to the clavicle
Function: helping to firmly unite the distal end of the clavicle to the scapula

Question 7

Coracoacromial Ligament

Answer 7

Unites the coracoid process and the acromion process of the scapula serving to prevent the upward dislocation of the humeral head

Question 8

Rotator Cuff

Answer 8

Surgical term, refers to the tends of four shoulder muscles that fuse with the lateral portion of the joint capsule
Muscles: supraspinatus, infraspinatus, subscapularis, teres minor

Question 9

Supraspinatus

Answer 9

Location: found on the posterior surface of the scapula situated above the spine of the scapula

Question 10

Infraspinatus Muscle

Answer 10

Location: originates below the spine, down to the inferior angle of the scapula

Question 11

Subscapularis muscle

Answer 11

Location: located on the anterior surface of the scapula filling the subscapular fossa

Question 12

Teres minor

Answer 12

Rounded muscle

Location: extends from the axillary border of the scapula

Question 13

Inferior margin of the joint capsule

Answer 13

No tendons or ligaments found here

Question 14

Rotator cuff muscle (function)

Answer 14

Protect the capsule and the sunovial membrane of the shoulder from trauma.

Question 15

Long Head of the Biceps Brachii (Function)

Answer 15

Further support to the shoulder joint

Question 16

Long Head of the Biceps Brachii (Location)

Answer 16

Muscle that passes through the anterior joint capsule, crossing over the head of the humerus before it leaves the joint capsule to join the short head of the biceps brachii