OSMT (Ontario Society of Medical Technologists) Practice Exam

A sac of fluid near a joint is known as a bursa. Bursae are small, fluid-filled sacs that provide cushioning between bones and tendons or muscles around joints. They help reduce friction and allow for smooth movement during joint activity.

Understanding the functions of bursae is essential for recognizing their role in joint health. When there is inflammation of a bursa, it can lead to conditions such as bursitis, which is characterized by pain and swelling around the joint.

The other choices refer to various structures but do not accurately describe a fluid-filled sac near a joint. Tendons are connective tissues that attach muscles to bones, articulations refer to the joints where two bones meet, and the synovial membrane is the tissue that lines the inner surface of synovial joints, producing synovial fluid which lubricates the joint but is not itself a sac. Hence, identifying the bursa as the correct answer highlights your understanding of joint anatomy and its related structures.