What makes the lumbar vertebrae different from the cervical vertebrae and the thoracic vertebrae? The lumbar vertebrae allow the twist and turn.
The lumbar vertebrae are located in the middle of the back.
The lumbar vertebrae only allow flexion and extension movements.
The lumbar vertebrae are made up of seven bones.

The lumbar vertebrae only allow flexion and extension movements.

Explanation:

The lumbar vertebrae only allow flexion and extension movements but has limited rotational movement. It is present on the third region of vertebral column. This lumbar vertebrae is present in the lower of the back between the thoracic and sacral vertebral segments. Lumbar vertebrae is made up of 5 bones or vertebrae. The main function of this vertebrae is to bear body weight of the upper part.

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the answer is c prevention of weight gain. i got the same question.