Question

IV.
Answer the following:
1) Why is our backbone slightly movable?
2) Why is the Vertebral column curved?
3) Mention the 5 groups of vertebrae based on the region
they are located and mention the number of vertebrae
present in each region.​

Answer 1

Here's your answer!

1. Our backbone is slightly movable because of the presence of intervertebral discs, which enable the backbone to move and bend.

2. The vertebral column is curved because it provides erect posture.

3. 5 groups of vertebrae based on the region are :-

a. Cervical ( Neck )

b. Thoracic ( Upper back )

c. Lumbar ( Lower back )

d. Sacral

e. Coccygeal

The number of vertebrae present in each rregion are :-

a. Cervical - 7

b. Thoracic - 12

c. Lumbar - 5

d. Sacral - 5 fused

e. Coccygeal - 3-5 fused

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