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NEET2011ZoologyLocomotion and MovementActual

The joint between atlas and axis is called

Options

  1. Apivot joint
  2. Bhinge joint
  3. Csaddle joint
  4. Dangular joint

Correct answer

A. pivot joint

Step-by-step solution

Axis vertebra possesses a peg-like structure called the odontoid process which projects forward from the centrum. It fits into the cavity of the atlas below the ligament so that it is separated from the neural canal. Such an arrangement gives a pivot joint which allows head to shake (rotate from one side to the other).

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