Which statement is NOT true about synovial joints?

Which statement is NOT true about synovial joints?

• A. They have a joint cavity.
• B. They have synovial fluid.
• C. They lack a joint capsule.
• D. They have articular cartilage.

Answer: (C)

Synovial joints are defined by a fibrous joint capsule that encloses a joint cavity, with the inner lining of the capsule (the synovial membrane) producing lubricating synovial fluid. The ends of the articulating bones are covered with articular cartilage to minimize friction and absorb shock. Because of this, the presence of a joint cavity, synovial fluid, and articular cartilage are all true features of synovial joints. The statement that they lack a joint capsule is not true, since the capsule is essential to enclosing the cavity and housing the synovial fluid.

Synovial joints are defined by a fibrous joint capsule that encloses a joint cavity, with the inner lining of the capsule (the synovial membrane) producing lubricating synovial fluid. The ends of the articulating bones are covered with articular cartilage to minimize friction and absorb shock. Because of this, the presence of a joint cavity, synovial fluid, and articular cartilage are all true features of synovial joints. The statement that they lack a joint capsule is not true, since the capsule is essential to enclosing the cavity and housing the synovial fluid.