arise partly from the sides of the body and partly fromt he vertebral arch; these are short and wide and are perforated by the transeverse foramina for the transmission of the vertebral artery and vein, and present a deep concavity on their upper surfacesfor the passage of the spinal nerves.   .
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But the spine should not curve any other way The spine should look straight from the front In reality almost everybody has at least a little bit of an S-shaped curve if you look from the front (on an Xray). It's how severe the curve is, that makes it bad.
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spinous processes of typical cervical vertebrae. are short and have double pointed (bifid) tips, and are directed psoteriorly adn slightly inferiorly, their palable tips lie at the level of the interspace below the body of the vertebrae from which they arise.   .
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The lumbar curve develops as the baby learns to stand and then walk near the end of the first year of life. The thoracic curve is already there as part of the C-shaped curve we start out with. It is very important to let these curves develop naturally so that the baby will have a healthy spine.
http://www.spinalhealth.net/ana.html
Parts of the lumbar spine. The cervical spine is made up of seven small vertebrae that begin at the base of the skull and end at the upper chest. The thoracic spine is made up of 12 vertebrae that start from the upper chest to the middle back and connect to the rib cage.
http://orthoinfo.aaos.org/topic.cfm?topic=A00575
Making the world better, one answer at a time. 4 curves. two are primary curvatures, because they are present when we are born. they are. 1. thoracic. 2.sacral. other two curves are secondary curvatures. they develop after the birth. 1. cervical, appears when a baby begins to raise its head.
http://www.answers.com/Q/How_many_normal_curves_does_the_spine_have
This is because the curves increase resistance to axial compression-that is, a head-to-toe squishing of the spine. The physics of the spine state that resistance of a curved column is directly proportional to the square of the number of curves plus one. In math terms that can be written as: (3)2 + 1 = 10. That means that 10 times more weight can be supported by a curved spine than if it were straight.
http://www.spinalhealth.net/ana.html
right, left; muscle action and to be influenced by occupation. the slight lateral curve in the upper thoracic region is to the ____ in right handed people and to the ____ in left handed people. for this reason lateral curvature of the vertebral column is believed to be the reluts of what.
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_____ which is the lease pronounced of the curves, develops when an infant begins to hold the head up at about three or four months of age and begins to sit alone at about eight or nine months of age.   . develops when the child begins to walk at about 1 1/2 years of age.
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Your spine is made up of three segments. When viewed from the side, these segments form three natural curves. The c-shaped curves of the neck (cervical spine) and lower back (lumbar spine) are called lordosis. The reverse c-shaped curve of the chest (thoracic spine) is called kyphosis. These curves are important to balance and they help us to stand upright.
http://orthoinfo.aaos.org/topic.cfm?topic=A00575
how many natural curves does the spine has
There are three natural curves of spine. The spine has three natural curves.