question_answer

                                                            Cartilage is present in the joints of our body which helps in their smooth movement. With advancing age, this cartilage wears off. How would this affect the movement of joints?        

Answer:

            Cartilage is present in the joints of our body reduces friction during movement of joints. But on wearing off of this cartilage, the force of friction increases due to which the smoothness of movement decreases and one feels the joint pain.