What best describes the structure of a synovial joint?

• A. A joint where bones are connected by dense fibrous tissue
• B. A joint with a fluid-filled cavity enclosed by a fibrous capsule
• C. A joint where bones are connected by cartilage
• D. A joint where bones are fused together

Answer: (B)

Verified step by step guidance

1. Understand that synovial joints are a type of joint found in the human body that allows for a wide range of movement.
2. Recognize that synovial joints are characterized by the presence of a synovial cavity, which is a space between the articulating bones.
3. Identify that this synovial cavity is filled with synovial fluid, which serves to lubricate the joint, reducing friction and allowing for smooth movement.
4. Note that the synovial cavity is enclosed by a fibrous capsule, which is a tough, protective layer that helps maintain the integrity of the joint.
5. Conclude that the best description of a synovial joint is 'A joint with a fluid-filled cavity enclosed by a fibrous capsule,' as this highlights the key structural features of synovial joints.