How many bones are in the coccygeal region?

How many bones are in the coccygeal region?

• A. 5
• B. 4
• C. 6
• D. 3

Answer: (A)

The coccygeal region is the tailbone area, made up of several small coccygeal vertebrae that can fuse as development progresses. In humans, there can be three to five coccygeal vertebrae, and counting those individual segments in a person with five gives five bones in the coccygeal region. Four is the most common count, but five is a recognized normal variation, which is why this option fits. The numbers outside three to five are not typical for the coccygeal region.

The coccygeal region is the tailbone area, made up of several small coccygeal vertebrae that can fuse as development progresses. In humans, there can be three to five coccygeal vertebrae, and counting those individual segments in a person with five gives five bones in the coccygeal region. Four is the most common count, but five is a recognized normal variation, which is why this option fits. The numbers outside three to five are not typical for the coccygeal region.