Axial Skeleton Quiz

1. A label indicates the bone forming much of the back and base of the cranium around the opening for the spinal cord. Which bone is labeled?

2. Which structure belongs to the axial skeleton rather than the appendicular skeleton?

3. A rib connects to the sternum through its own costal cartilage rather than sharing cartilage or lacking an anterior attachment. How is it classified?

4. Which skull bone forms the lower jaw and moves at the temporomandibular joints?

5. An isolated vertebra has facets where ribs articulate. To which vertebral region does it belong?

6. After an impact to the chest, a doctor checks the axial structure that encloses and helps protect the heart and lungs. Which structure is being examined?

7. A vertebra has a prominent dens that acts as a pivot for rotation of the atlas and head. Which vertebra is it?

8. A label points to the broad, superior portion of the sternum that articulates with the clavicles. Which part is labeled?

9. A text-based label points to the broad bone that forms the forehead and the upper parts of the eye sockets. Which bone is it?

10. Which auditory ossicle has a footplate that fits into the oval window of the inner ear?

11. An isolated vertebra has a transverse foramen in each transverse process. From which region did it most likely come?

12. A text-based label describes a large, triangular bone formed by fused vertebrae at the base of the vertebral column, between the hip bones. What is it?

13. Which part forms the small, inferior tip of the sternum?

14. An MRI shows compression of a fibrocartilaginous cushion located between adjacent vertebral bodies. Which structure is affected?

15. During a neck examination, a clinician locates a U-shaped axial bone that does not directly articulate with another bone. Which bone is this?

16. A label points to the small terminal section of fused vertebrae immediately below the sacrum. Which structure is labeled?