Question

Which one is the example of a pivot joint?
A) Ankle joint
B) Hip joint
C) Radioulnar joint
D) Metacarpophalangeal joint

Answer 1

Hint: A pivot joint is a synovial joint wherein the finishes of two bones meet—one end being a focal hard chamber, the opposite end being a ring (or ring-like structure) made of bone and tendon. In certain joints, the chamber pivots inside the ring. In different joints, the ring pivots around the chamber.

Complete answer:
A pivot joint permits development in one plane, for example, pivot about a hub. Pivot joints, for instance, license one, subsequent to twisting the elbow, to turn the pave one's hand upward or descending by pivoting the lower arm. The two bones of the lower arm (the ulna and the span) bend around one another utilizing a turn joint.

Radioulnar joint is the joint in the body which has the structure and the functions of the pivot joint. These joints are placed in the wrist and also in feet.

Hence, the option (C) is the correct answer.

Note:A pivot joint permits development in one plane, for example, revolution about a pivot. Pivot joints, for instance, license one, subsequent to bowing the elbow, to turn the palm of one's hand upward or descending by pivoting the lower arm. The two bones of the lower arm (the ulna and the range) turn around one another utilizing a pivot joint.