The number of anterior curves present in the | vedclass

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(A) The human vertebral column has four natural curves: cervical,thoracic,lumbar,and sacral.Out of these,the cervical and lumbar curves are convex ant

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$2$

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(A) The human vertebral column has four natural curves: cervical,thoracic,lumbar,and sacral.Out of these,the cervical and lumbar curves are convex anteriorly (secondary curves).The thoracic and sacral curves are concave anteriorly (primary curves).Therefore,there are $2$ anteriorly concave curves (thoracic and sacral) and $2$ anteriorly convex curves (cervical and lumbar).In anatomical terminology,'anterior curves' usually refers to the curves that are concave anteriorly (kyphotic curves).Thus,there are $2$ such curves.

The number of anterior curves present in the human vertebral column is

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