Question

why is the vertebral column curved? any two reasons please

Answer 1

The spine (or backbone) runs from the base of the skull to the pelvis. It serves as a pillar to support the body's weight and to protect the spinal cord. There are three natural curves in the spinethat give it an "S" shape when viewed from the side.

What causes a curved spine?
Neuromuscular conditions: These affect the nerves and muscles and include cerebral palsy, poliomyelitis, and muscular dystrophy. Congenital scoliosis (present at birth) This is rare and occurs because the bones in the spine developed abnormally when the fetus was growing inside the mother.

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Answer 2

The vertebral column is curved naturally  

1. to distribute the body weight evenly.
2. to provide flexibility during movement.
3. to protect the spinal cord.

Explanation:

The backbone/spine/vertebral column has S-shaped curvature when viewed from the side known as spinal curvature.

The four curves are as follows.

1. Cervical curve - backward curve in the neck area (lordotic curve)
2. Thoracic curve - regular curve in the chest area (kyphotic curve)
3. Lumbar curve - backward curve in the lumbar area (lordotic curve)
4. Sacral curve - regular curve in the pelvic area (kyphotic curve)

A child is born with thoracic and sacral curves.

• Cervical curve develops when the infant is able to hold its head straight and the sit upright (3-9 months).
• The lumbar curve develops when the child starts to walk (about a year).
• This explains the purposes of the spinal curves.