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13 Cards in this Set

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Bone of the upper arm, longest, heaviest bone of the upper limb, 13 in. long or half again the height of the skull, consists of narrow shaft enlarged at each articular end

Proximal end of the humerus

Composed of head and tubercles

Head of the humerus

Smooth, half-sphere looking somewhat backward to articulate with the should blade (ball-and-socket joint)

Major and minor tubercles of the humerus

Flank the head in front

Intertubercular groove

Separates the major and minor tubercles

Shaft of the humerus

Suggests and S-curve - especially in its lower half which arches backward

Deltoid tuberosity

Midway down the shaft (attachment for the deltoid muscle)

Distal end of the humerus

Broad plate, modified so as to articulate in a special way with each of the forearm bones, most directly associated with the ulna (inner arm bone)


Oblique spool on which the ulna swings up and down (hinge joint)


Provides articulation for the radius (outer forearm bone), ball-shaped surface upon which the indented head of the radius may glade and revolve (converse ball-and-socket joint)

Olecranon fossa

Receives the rear (olecranon) process of the ulna in full backward extension

Medial epicondyle

Most prominent in both skeleton and live subject, when arm hangs at side, projection is found at or below the lowest margin of the rib cage

Lateral epicondyle

At the bottom of a pit in the fully extended, fleshy elbow, protruding itself only in flexion