Subacromial and subcoracoid are often taken as a single bursa

Bursae are used as cushions to decrease friction

There are 6 main bursae in the shoulder

Superior and middle glenohumeral ligaments both limit external rotation

Posterior portion of the inferior glenohumeral ligament limits external rotation

Transverse ligament keeps tendon of long head of biceps in bicipital groove

Teres minor is a rotator cuff muscle

subscapularis is a rotator cuff muscle

teres major is a rotator cuff muscle

Teres major is innervated by the upper subscapular nerve

Subscapularis originates at the subscapular fossa

Teres minor is innervated by the axillary nerve

Suprascapularis inserts at the greater tubercle of humerus

Subscapularis inserts at the greater tubercle

of humerus

Teres minor inserts at the greater tubercle of humerus

radial nerve innervates triceps brachii

musculocutaneous nerve innervates biceps brachii

triceps brachii have three heads: long, short, medial

coracobrachialis is innervated by the axillary nerve

main actions of coracobrachialis are flexion and adduction

blood supply of the coracobrachialis is the brachial artery

Glenohumeral joint is a ball & socket joint

Humeral head is concave

The shoulder is the most dislocated joint in the body