CAMRT Radiography Practice Exam

Which of the following bones is not one of the cranial bones?

1. Sphenoid

2. Clavicle

3. Frontal

4. Occipital

The correct answer is: Clavicle

The clavicle is the correct choice as it is not one of the cranial bones. Cranial bones are specifically those that form the cranium, which encases and protects the brain. The cranial bones include the frontal, sphenoid, temporal, parietal, occipital, and ethmoid bones. In this context, the sphenoid, frontal, and occipital are all vital components of the cranial structure, contributing to the formation and protection of the skull. The clavicle, on the other hand, is part of the appendicular skeleton and serves as a connection point between the arm and the trunk, which distinguishes it from the cranial bones.