Answer:
Menisci are the semi-lunar fibrous cartilage of the knee which could be either medial meniscus or radial meniscus. The meniscus in humans is present in the joints of the knee, sternoclavicular joints, wrist and temporomandibular joints.
These menisci play important roles in these joints as they reduce the friction caused by the bones during movement. They also disperse the weight of the body of the humans as they spread the load of the weight of the body to different bones like the femur and tibia.