A) pivot joint
B) hinge joint
C) saddle joint
D) angular joint
Correct Answer: A
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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