The human vertebral column is made up of 33 bones:
There are four curves in the spine. They are the Cervical, Thoracic, Lumbar and Pelvic curves.
Thoracic and sacral curves are present at birth also known as primary curves
The adult spine has four curves: the cervical curve (neck), thoracic curve (upper back), lumbar curve (lower back), and sacral curve (pelvic region). These curves provide structural support, enabling the spine to absorb shock and distribute mechanical stress during movement. They also help maintain an upright posture and balance the body's weight over the pelvis, contributing to overall stability and flexibility. Additionally, the curves facilitate efficient movement and protect the spinal cord and nerves.
Anatomy professor
3 curves
Presumably no curves at all.
The thoracic and sacral curves are the primary curves, as they are obvious at birth. The cervical and lumbar curves are secondary as they are modifications on the foetal position.
there are 3 curves
snakes
In the fetal and neonatal spine, the vertebral column curves of the cervical, thoracic, lumbar, and sacral all oriented as anterior concave curves. and are designated primary curves. To get the state legislature to adopt rules that require sequential lineups
The primary curve was formed before birth but the secondary curve was formed after birth. Thats basically the difference between the two. hope that helps
It has 1 syllable.