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Write about movable joints in Human beings? |
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Answer» Movable joints are four types. They are: 1. Ball-and-socket joint: The ball shaped surface of one bone fits into the cup-like shape of another. Examples of a ball-and-socket joint include the hip and the shoulder. 2. Hinge joint: The ends of the bones are shaped in a way that allows motion in two directions, forward and backward. Examples of hinge joints are the knees and elbows 3. Pivot joint: Only allows rotating movement. The joint that joins the skull to the backbone is called the pivot or neck joint. 4. Gliding joint: It is a joint which allows only gliding movement. The gliding joint allows one bone to slide over the other. The gliding joint in your wrist allows you to flex your wrist. It also allows you to make very small side-to-side motions. There are also gliding joints in your ankles and backbone. |
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