The four curves of the adult spinal column are not all present at birth. Which of the following are the secondary curves, those that do not appear until several months later?
A) cervical and sacral
B) thoracic and sacral
C) thoracic and lumbar
D) cervical and lumbar
E) sacral and lumbar

Question

Quizplus · Accepted Answer

The secondary curves of the spine, which develop after birth, are the cervical and lumbar curves. The cervical curve develops as the infant begins to hold up its head, and the lumbar curve develops as the child begins to walk.

The Four Curves of the Adult Spinal Column Are Not