Pivot joint is a freely moving diarthrosis that enables only rotary movement around a single axis. Therefore, option (C) allows you to rotate your head.
What is a pivot joint?The first and second vertebrae of the spine are connected to one another by a pivot joint, which is located at the base of the skull. Consequently, this enables the head to rotate from side to side. A pivot joint is a type of joint that allows for movement of the bones in only one plane, such as rotation around a single axis.
A synovial joint known as the atlantoaxial joint can be categorized as both a biaxial and a pivot joint. This joint is located in the upper region of the neck, between the first and second cervical vertebrae, also known as the atlas and axis, respectively.
Therefore, option (B) is correct.
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