The joint between atlas and axis is called?
Correct answer: C. Pivot joint
- A. Angular joint
- B. Hinge joint
- C. Pivot joint
- D. Saddle joint
Explanation
Pivot joint is present between atlas and the axis in humans. In this joint articular end of one bone is fixed while the other can rotate over it. In angular joint, an oval condyle of one bone fits into an elliptical concavity of the other, e.g. wrist and meta carpophalangeal joints. Hinge joint allows movements in one plane only, e.g.knee joint. In saddle joint, small projection of one bone fits into a saddle like depression of another bone.
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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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