Why are the thoracic and sacral curves known as primary curvatures of the spine?© BrainMass Inc. brainmass.com October 9, 2019, 6:58 pm ad1c9bdddf
Early in development (during fetal development and infancy) the entire spine is curved outwardly (it is convex towards the back and concave towards the front; this is called a kyphosis). ...
The anatomy of the spinal columns are determined. Why the thoracic and sacral curves are known as primary curvature of the spine are determined.