Bones of the Appendicular Skeleton

clavicle

connects scapula to breastbone; forms part of pectoral girdle

scapula

connects clavicle to humerus; forms part of pectoral girdle

acromion process

bony projection of the scapula

glenoid cavity

a shallow depression that articulates with the head of the humerus

coracoid process

a hook-shaped bone projection on the scapula that helps stabilizes the shoulder point

humerus

long bone in the upper arm

head of humerus

the proximal end of the humerus bone that forms a ball and socket joint with the scapula’s glenoid cavity

greater & lesser tubercles

bony projections on the proximal end of the humerus that serve as attachment points for muscles

lateral and medical epicondyles

bony projections on the humerus that serve as attachment points for muscles and tendons

olecranon fossa

a large, deep, triangular depression in the back of the humerus bone that accommodates the olecranon of the ulna when the arm is fully extended

coronoid fossa

a small depression in the humerus that receives the coronoid process of the ulna when the elbow is flexed