Most of the joints in the body are movable joints Movable joints allow the body a wide range of movements. Look at Figure 7 to see the variety of movements that these joints make possible The bones in movable joints are held together by strong connective tissues called ligaments. Most joints have a second type of connective tissue, called cartilage (KAHR tuh lij), which is more flexible than bone. Cartilage covers the ends of the bones and keeps them from rubbing against each other. For example, in the knee, cartilage acts as a cushion that keeps your femur (thighbone) from rubbing against the bones of your lower leg. In addition, a fluid lubricates the ends of the bones, allowing them to move smoothly over each other Reading How are movable joints held together? Checkpoint