The anatomy of a joint consists of muscles, tendons, and other structures. A joint is where bones meet, like in fingers, elbows or knees. Muscles and tendons are attached to the bones. When a muscle tightens, the tendon pulls on the bone, which makes the joint move. Synovial fluid, which is made by the synovial membrane, bathes the joint and helps it move smoothly. Cartilage covers bones like a cape. It is super strong and very flexible. Cartilage stops the ends of the bones from hitting each other and scraping together.
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