Question

Human vertebral column has

• A. Four curves
• B. No curves
• C. Three curves
• D. Two curves

Answer 1

The correct option is A Four curves

• The vertebral column in adults have four curvatures and are classified as- primary or secondary curvatures.
  

1) The primary curves are the ones which are retained from the fetal curvature

• It is retained in two regions as the thoracic curve which consists of thoracic vertebrae and the sacrococcygeal curve.
  

2) Whereas, the secondary curvatures develop gradually after the birth as the child learns to sit upright, stand and walk.

• The lumbar curve of the lower back is a secondary curvature.
  
• So, the correct answer is 'Four curves'.