Humerus

Head

big ball that connects to the glenoid cavity

Anatomical neck

separates head and tubercles

Surgical neck

under head and tubercles

Greater tubercle

bigger bump opposite side of the head

Lesser tubercle

smaller bump next to the greater tubercle

Bicipital groove

groove between the tubercles

Medial and lateral lips of bicipital groove

the ridged borders of the bicipital groove

Deltoid tuberosity

the roughened area on the humerus

Medial epicondyle

bigger projection sticking out on the same side as the head

Medial supracondylar ridge

ridge right above medial epicondyle

Lateral epicondyle

smaller projection opposite side of medial epicondyle

Lateral supracondylar ridge

ridge right above lateral epicondyle

Capitulum

small ball-like projection next to the lateral epicondyle

Trochlea

pointed projection next to medial epicondyle

Olecranon fossa

deep depression on the posterior side

Nutrient foramen

small opening for blood vessels

Groove for radial nerve

a shallow indentation on the posterior surface

Groove for ulnar nerve

a shallow channel on the posterior surface