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4. Answer the following:(a) What is a ball and socket joint?

Answer»

A ball and socket joint is a type of synovial joint, such as the hip and shoulder joints. In this type of joint, one bone has a smooth, ball-shaped head that fits into a cuplike socket on the other end. The ball and joint sockets contain a cup-like bone socket that holds a rounded ball-shaped bone.

the joint which move in 180 degree is called ball and socket joint



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