Metacarpophalangeal joints are examples of:
Correct answer: C. Condyloid joint
- A. Hinge joint
- B. Saddle joint
- C. Condyloid joint
- D. Ball and socket joint
Explanation
Metacarpophalangeal joints are the intersection of the metacarpals and the phalanges in the hand. These joints are condyloid joints. A condyloid joint is a type of synovial joint where the articular surface of one bone has an ovoid convexity sitting within an ellipsoidal cavity of the other bone. It allows movement in two planes (i.e., flexion or extension, abduction or adduction).
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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