The Pectoral Girdle

Attaches the upper limb to the axial skeleton

THE PECTORAL GIRDLE

Attaches the upper limb to the axial skeleton

Clavicle

Collar bone

• RIGHT

• Sternal end

• Oval or triangular medial end that articulates with the sternum to form the lateral walls of the jugular notch

• RIGHT

• Acromial end

• Flattened lateral end that articulates with the acromion of the scapula to form the acromioclavicular (AC) joint

Scapula

Shoulder blades

• RIGHT

• Superior border

• Short, sharp border located superiorly

• RIGHT

• Medial border

• Thin, long border that runs roughly parallel to the vertebral column

• Vertebral border

• RIGHT

• Lateral border

• Thick border that is closest to the armpit and ends superiorly with the glenoid cavity

• Axillary border

• RIGHT

• Glenoid cavity

• A shallow socket that articulates with the head of the humerus

• RIGHT

• Acromion

• The lateral end of the spine of the scapula that articulates with the clavicle to form the acromioclavicular (AC) joint

• RIGHT

• Coracoid process

• Projects above the glenoid cavity as a hooklike process; helps attach the biceps brachii muscle

• RIGHT

• Spine

• A ridge of bone on the posterior surface that is easily felt through the skin

• RIGHT

• Supraspinous fossa

• A depression located superior to the spine of the scapula

• RIGHT

• Infraspinous fossa

• A broad depression located inferior to the spine of the scapula

• RIGHT

• Suprascapular notch

• Small notch located medial to the coracoid process that allows for the passage of blood vessels and a nerve

• RIGHT

• Subscapular fossa

• A large shallow depression that forms the anterior surface of the scapula

• RIGHT

• Superior angle

• RIGHT

• Inferior angle

• RIGHT

• Infraglenoid tubercle