Which of the following is NOT a synovial joint?

• A. saddle joint
• B. ball-and-socket joint
• C. suture joint
• D. pivot joint

Answer: (C)

Verified step by step guidance

1. Understand the definition of a synovial joint: Synovial joints are characterized by a fluid-filled joint cavity that allows for a wide range of motion. They are the most common and movable type of joint in the body.
2. Identify the types of synovial joints: Common types include hinge joints (like the elbow), ball-and-socket joints (like the shoulder), pivot joints (like the neck), and saddle joints (like the thumb).
3. Examine the characteristics of a suture joint: Suture joints are fibrous joints found in the skull. They are immovable and do not have a joint cavity, which distinguishes them from synovial joints.
4. Compare the characteristics: Synovial joints have a joint cavity and allow for movement, whereas suture joints are immovable and lack a joint cavity.
5. Conclude which joint is not synovial: Based on the characteristics, the suture joint does not fit the definition of a synovial joint, as it is immovable and lacks a joint cavity.