Left clavicle and related bones, superior view; left clavicle, inferior view

Question 1

Looking down from above the head and shoulders reveals the superior aspect of the pectoral girdle, including both the clavicle and __.

Answer 1

scapula

Question 2

The girdle is anchored to the axial skeleton by a single articulation anteriorly and is held in position posteriorly by many small muscles attached to the scapula; this provides mobility but limited strength to the shoulders, which anchor the motions of the arms. The S-shaped clavicle articulates medially with the manubrium of the __ just above the first rib and laterally with the acromial process of the scapula.

Answer 2

sternum

Question 3

The __ of the clavicle is broader than the sternal end.

Answer 3

acromial end

Question 4

At the posterior margin of the inferior surface near the acromial end is the ___; this is an attachment point for the conoid ligament, which also attaches to the coracoid process of the scapula.

Answer 4

conoid tubercle