Question

Our backbone is made up of___

• A. Single bone
• B. Two bones
• C. six bones
• D. Many small bones

Answer 1

The correct option is D

Many small bones

The correct option is (D)

Explanation of correct option:

1. The backbone is a hollow tube that passes the main spinal cord through its central canal.
2. Backbone provides support to our body and protects the spinal cord.
3. Spine is made up of 33 vertebrae (small bones) joining together.
4. Backbone has 12 thoracic, 7 cervical, 5 lumbar, 5 sacra, and 4 coccyx or tailbone(which get fused to form coccyx).
5. Since the backbone is formed by chains of bones it remains flexible.