Final answer:
Synovial fluid is the extension of the synovial membrane that forms a cushion to prevent structures from rubbing together in a joint. A bursa is a small, fluid-filled sac located at friction points between bones, tendons, and muscles. Its function is to reduce friction and provide a smooth gliding surface, allowing structures to move more easily.
Step-by-step explanation:
The extension of the synovial membrane that forms a cushion to prevent structures from rubbing together is called synovial fluid. A bursa is a small, fluid-filled sac located at friction points between bones, tendons, and muscles. Its function is to reduce friction and provide a smooth gliding surface, allowing structures to move more easily. This thick, slimy fluid is secreted by the cells of the synovial membrane and provides lubrication to reduce friction between the bones of a joint. It also nourishes the articular cartilage, which covers the ends of the bones in a synovial joint.
An extension of the synovial membrane that forms a cushion to prevent structures from rubbing together is called a bursa. A bursa is a small, fluid-filled sac located at friction points between bones, tendons, and muscles. Its function is to reduce friction and provide a smooth gliding surface, allowing structures to move more easily. Bursae are found in various joints throughout the body and are important for joint function and movement. When a bursa becomes inflamed, it can result in a condition known as bursitis.