Right humerus, anterior and posterior views

Question 1

The rounded ___ of the humerus moves within the cup-shaped glenoid fossa of the scapula.

Answer 1

head

Question 2

Adjacent to the head are 2 projections on the lateral surface of the humerus-the greater tubercle is the most lateral point of the body at shoulder level, and the lesser tubercle lies on the anterior, medial surface and is separated from the greater tubercle by a shallow groove called the __.

Answer 2

intertubercular sulcus

Question 3

Muscles attach to both tubercles, while a large tendon passes along the length of the sulcus. The edge of the joint capsule is called the ___, while the narrower surgical neck marks the metaphysis of the growing bone.

Answer 3

anatomical neck

Question 4

The deltoid muscle attaches to the shaft at the ___.

Answer 4

deltoid tuberosity

Question 5

At the distal end of the humerus, the ___ and the ___ articulate with the radius and ulna, respectively.

Answer 5

Capitulum

Trochlea

Question 6

The radial, coronoid, and olecranon fossae are depressions that accommodate the radial head, ulnar coronoid process, and ulnar olecranon as they move. Laterally, the humerus widens out in the medial and lateral __; supracondylar ridges provide attachment sites for muscles.

Answer 6

epicondyles