What is the function of a bursa?

The function of a bursa is to allow smooth movement in joints. Bursae are small, fluid-filled sacs located throughout the body, particularly in areas where friction could occur between bones, tendons, and muscles. They act as cushions to reduce friction and provide a smooth surface for the movement of these structures during physical activity. By minimizing friction, bursae help to prevent irritation and damage to the surrounding tissues, facilitating ease of motion and enhancing joint function.