Coccyx Bone Anatomy Quiz
1. Identify structure 1 in the illustration above.
A. Coccygeal cornua
B. Base
C. Transverse process
D. Apex
The answer is A, coccygeal cornua. These articulate with the cornua of the sacrum.
2. Identify structure 2 in the illustration above.
A. Anterior surface
B. Coccygeal cornua
C. Apex
D. Transverse process
The answer is D, transverse process. Transverse means extending across, and a process is a bony projection.
3. Identify structure 3 in the illustration above.
A. Lateral border
B. Anterior surface
C. Base
D. Apex
The answer is C, base. The base of the coccyx articulates with the apex of the sacrum, forming the
sacrococcygeal symphysis joint.
4. Identify structure 4 in the illustration above.
1. Identify structure 1 in the illustration above.
A. Coccygeal cornua
B. Base
C. Transverse process
D. Apex
The answer is A, coccygeal cornua. These articulate with the cornua of the sacrum.
2. Identify structure 2 in the illustration above.
A. Anterior surface
B. Coccygeal cornua
C. Apex
D. Transverse process
The answer is D, transverse process. Transverse means extending across, and a process is a bony projection.
3. Identify structure 3 in the illustration above.
A. Lateral border
B. Anterior surface
C. Base
D. Apex
The answer is C, base. The base of the coccyx articulates with the apex of the sacrum, forming the
sacrococcygeal symphysis joint.
4. Identify structure 4 in the illustration above.
