Shoulder Girdle

Acromial end

Side of clavicle that articulates with the acromion

Sternal end

Side of clavicle that articulates with the sternum

Rugosity for trapezius muscle

Where trapezius muscle connects

Rugosity for deltoid muscle

Where deltoid muscle connects

Rugosity for pectoralis major muscle

Where the pectoralis major muscle connects

Articular facet for first costal cartilage

Where the first rib contacts the clavicle

Conoid tubercle

Where the clavicle contacts the coracoid process on the scapula

Subclavian sulcus

Groove for the subclavian vein and artery

Clavicular facet

Where the clavicle contacts the acromion process

Scapular notch

Groove located on the superior border of the scapula that allows the suprascapular nerve to pass through

Superior angle

Upper most medial corner of the scapula

Subscapular fossa

Concave area on the costal surface of the scapula, primarily serving as the origin for the subscapularis muscle

Oblique ridges

Cross the subscapular fossa from superomedial to inferiolateral (parallel to scapular spine); formed by intramuscular tendons of the subscapularis muscle

Medial border

Most medial edge of the scapula

Supraspinous fossa

Concave area located on the dorsal surface of the scapula (shoulder blade), above the spine of the scapula; serves as the origin for the supraspinatus muscle

Infraspinous fossa

Large depression located on the posterior side of the scapula, below the spine, and serves as the origin for the infraspinatus muscle

Lateral border

Most lateral edge of the scapula

Scapular spine

Prominent bony ridge on the posterior surface of the scapula that separates the supraspinous fossa from the infraspinous fossa

Acromion

Forms the highest point of the shoulder; serves as an attachment site for muscles like the deltoid and trapezius

Coracoid process

Small, hook-like bony projection on the scapula that helps stabilize the shoulder joint and serves as an attachment point for several muscles and ligaments

Supraglenoid tubercle

Small, rough projection on the scapula, located above the glenoid cavity, and serves as the origin point for the long head of the biceps brachii muscle

Glenoid fossa

Shallow, pear-shaped surface on the scapula that articulates with the head of the humerus to form the shoulder joint

Infraglenoid tubercle

Small bony prominence on the scapula, located below the glenoid cavity; serves as the origin for the long head of the triceps brachii muscle