By Simran Jayasinghe
The skeletal system is made out of our bones and our cartilage. Cartilage is tissue that’s flexible, like the cartilage in our noses. Some main type of bones are ribs, femurs, pelvis, and fibula. The place where two or more bones meet are called joints. Some types of joints are pivot joints, gliding joints, hinge joints and ball-and-socket joints. Your knee is a ball-and-socket joint. A pivot joint, for example, is found in the neck. If we didn’t have bones, we would be a lump of cartilage, skin, and organs. Bones are what make up our structure and shape. Our bones also allow us to move. If we didn’t have bones, we would have to stay still our whole lives! That would be pretty boring! They also protect some of your organs.Your ribs, for example, protects your lungs and heart. Strings of tissues that hold our bones together are called ligaments. Ligaments also help to keep us moving.