Question

The number of vertebrae in a human is

• A. 206
• B. 7
• C. 12
• D. 26

Hint:

Remember: 33 vertebrae in young age 26 bones in adult vertebral column after fusion.

Answer 1

The Correct Option is D

Step 1: Understand the vertebral column.
The vertebral column is the central supporting axis of the body, and we must count its bones in an adult.
Step 2: List the regions.
There are 7 cervical, 12 thoracic and 5 lumbar vertebrae that stay separate.
Step 3: Note the fused regions.
In adults the 5 sacral bones fuse into 1 sacrum and the 4 coccygeal bones fuse into 1 coccyx.
Step 4: Add them up.
So the count is $7 + 12 + 5 + 1 + 1 = 26$.
Step 5: Check the distractors.
206 is the total bones in the body, 7 is only cervical, and 12 is only thoracic.
Step 6: Conclude.
The adult vertebral column has 26 vertebrae.
\[ \boxed{26} \]