OSMT (Ontario Society of Medical Technologists) Practice Exam

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Which statement is NOT true of synovial joints?

  1. joint surfaces are smooth because of the presence of articular cartilage

  2. synovial fluid increases friction within the joint cavity

  3. bursas permit tendons to slide easily as a joint is moved

  4. the fibrous connective tissue joint capsule encloses the joint

The correct answer is: synovial fluid increases friction within the joint cavity

Synovial fluid plays a crucial role in reducing friction within the joint cavity, not increasing it. It lubricates the joint surfaces, allowing them to move smoothly against each other during joint articulation. The presence of synovial fluid is essential in promoting the efficiency and ease of movement within synovial joints. Therefore, option B is not true of synovial joints. Option A is true because the articular cartilage contributes to the smoothness of joint surfaces. Option C is true because bursas help reduce friction between structures in motion and facilitate smooth movement. Option D is true because the fibrous connective tissue joint capsule provides structural support and encloses the joint.