Which combination is an example of ball and socket joints:
Correct answer: A. Hip and shoulder joints
- A. Hip and shoulder joints
- B. Hip and knee joints
- C. Shoulder and knee joints
- D. Hip and elbow joints
Explanation
The ball and socket joint, also called the spheroidal joint, is a joint in which the ball-like rounded surface of a bone moves within a cup-like depression on another bone. This allows greater freedom of movement (full circle) than any other kind of joint. As evident from the figure, the shoulder joint and the hip joint are of a ball-and-socket type. Whereas the elbow, knee, and ankle joints are hinge joints.
This question appeared on the UHS MDCAT 2018 paper, which you can sit online with every answer explained.
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About Joints
Joints are connections between bones that provide movement, stability or both. Coverage includes fibrous, cartilaginous and synovial joints, the structure of a synovial joint, cartilage, ligaments and synovial fluid, and the difference between ligaments that join bones and tendons that attach muscle to bone.
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