Question

The characteristic and an example of a synovial joint in humans is

• A. Fluid filled between two joints, provides cushion : Skull bones
• B. Fluid filled synovial cavity between two bones : Joint between atlas and axis
• C. Lymph filled between two bones, limited movement : Gliding joint between carpals
• D. Fluid cartilage between two bones, limited movement : Knee joint

Answer 1

Answer: (B)

Fluid filled synovial cavity between two bones : Joint between atlas and axis

The atlas and the occipital bone form the atlanto-occipital joint, which allows neck flexion. The atlanto-axial joint is a compound synovial joint. A synovial joint is a freely moveable joint, differing from other types of joints due to the presence of synovial fluid, which lubricates the joint. Most of the main joints (hands, feet, and other regions in the appendicular skeleton) are synovial joints. So, the correct answer is option B.