When in life does the lumbar curvature of the vertebral column appear?
A) in the 2-month embryo
B) at the time of birth
C) in the toddler (about 1 year old)
D) in old age

Question

Quizplus · Accepted Answer

The lumbar curvature of the vertebral column appears in the toddler stage, around 1 year old, as the child starts to walk and bear weight on their legs. At birth, the vertebral column has a single, gentle curve, and the lumbar region develops later in response to the upright posture. The curvature does not appear in old age as it is a developmental milestone.

When in Life Does the Lumbar Curvature of the Vertebral