Humerus

Question 1

Head

Answer 1

Rounded head on the proximal end of the bone. Articulates with the glenoid fossa of the scapula.

Question 2

Greater Tubercle

Answer 2

Placed on the anterior, but this one is the larger, more posterior bony lump that projects more laterally.

Question 3

Lesser Tubercle

Answer 3

Small, blunt eminence on the anterolateral side of the proximal humerus.

Question 4

Intertubercular groove

Answer 4

Begins between the lesser and greater tubercles and extends down longitudinally down the proximal shaft.

Question 5

Deltoid Tuberosity

Answer 5

Placed on the lateral surface of the shaft. Has a rough surface and spirals around the shaft from posterosuperior to anteroinferior.

Question 6

Medial Epicondyle

Answer 6

Projection from the bone on the medial side of the distal end of the bone. Provides the space for the attachment of the ulnar collateral ligament.

Question 7

Capitulum

Answer 7

Rounded eminence that forms the lateral portion of distal surface of the humeral surface. It articulates with the head of the radius.

Question 8

Trochlea

Answer 8

The notch or spool shaped medial portion of the distal humeral surface that articulates with the ulna.

Question 9

Orecranon fossa

Answer 9

The largest of three hollows on the distal humeral surface. It is posterior, accommodating the orecranon process of the ulna during forearm extension.