Explain the structure of the backbone.

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Solution

The human backbone is made up of 33 smaller bones known as vertebrae. Between any two vertebrae is the spinal disc that cushions movements between the vertebrae. The vertebrae near the top of the backbone are the smallest and the ones at the bottom are the largest. Each vertebra has horn like projections where muscles attach and allow movement of the spine.
Each vertebra also has a passage through it. The spinal cord passes through this passage.

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