QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Give examples of the four types of diarthrotic joints.
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Answer
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Step 1: Understand the types of diarthrotic joints
There are four types of diarthrotic joints, which are the most movable joints in the body. These include the ball-and-socket joint, hinge joint, pivot joint, and saddle joint.
Step 2: Explain the ball-and-socket joint
A ball-and-socket joint, also known as a multiaxial joint, allows movement in multiple planes due to its structure. The head of one bone is shaped like a ball, and it fits into the cavity of another bone. This allows for flexion, extension, adduction, abduction, and rotation. An example of a ball-and-socket joint is the shoulder joint (glenohumeral joint) and the hip joint.
Final Answer
The four types of diarthrotic joints are: 1. Ball-and-socket joint: Allows movement in multiple planes, such as the shoulder and hip joints. 2. Hinge joint: Allows movement in one plane, such as the elbow, knee, and interphalangeal joints. 3. Pivot joint: Allows rotation around a single axis, such as the atlantoaxial joint. 4. Saddle joint: Allows movement in two planes, such as the carpometacarpal joint of the thumb.
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