CAMRT Radiography Practice Exam

The arms of the scapular Y are formed by which two structures?

1. Clavicle and scapula

2. Coracoid and acromion

3. Humerus and clavicle

4. Manubrium and sternum

The correct answer is: Coracoid and acromion

The arms of the scapular Y are specifically formed by the coracoid process and the acromion process of the scapula. The "Y" configuration is an important anatomical feature seen in radiographic imaging that helps in identifying the scapula's orientation and in diagnosing shoulder pathologies. The coracoid process is a small, hook-like structure that projects anteriorly from the scapula, providing attachment for various muscles and ligaments. The acromion, on the other hand, is a more prominent bony projection that extends laterally and serves as a point of attachment for the clavicle and certain shoulder muscles. Understanding these structures is crucial for interpreting shoulder radiographs and understanding normal anatomy versus pathological conditions. The other options do not reflect the true anatomical components of the scapular Y, focusing instead on unrelated or different structures.