Select the incorrect statements.
(a) The joint between the atlas and the axis is a pivot joint.
(b) The joint between the humerus and the scapula is a ball and socket joint.
(c) The joint between the temporal and parietal bones is a condyloid joint.
(d) The joint between the coxal bone and the femur is a hinge joint.

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Only (b) and (d)

Only (b) and (c)

Only (a) and (b)

Only (c) and (d)

answer is C.

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Detailed Solution

(a) The joint between the atlas and the axis is a pivot joint. The joint between the atlas (C1 vertebra) and the axis (C2 vertebra) is indeed a pivot joint, which allows rotational movement of the atlas around the dens (odontoid process) of the axis.

(b) The joint between the humerus and the scapula is a ball and socket joint. The shoulder joint, where the head of the humerus articulates with the glenoid cavity of the scapula, is a ball and socket joint. This type of joint allows a wide range of motion in multiple directions.

(c) The joint between the temporal and parietal bones in the skull is actually a suture. Suture joints are fibrous joints that connect flat bones of the skull and allow for very little movement, primarily serving to provide structural integrity to the skull.

(d) The hip joint, where the femur articulates with the acetabulum of the coxal bone, is a ball and socket joint. It allows for a wide range of movement in multiple planes, including flexion, extension, abduction, adduction, and rotation.

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