Relacionar Columnas Skeletal SystemVersión en línea Match the following por Ms. Burton 1 The ribs 2 The spine 3 The hardness of bones is called ____________ 4 Bones are made out of ? 5 The skull Crystals of Calcium Protects the brain and forms the shape of the face. Protect the heart, lungs, and other organs in the chest cavity. Made up of vertebrate that support and protect the spinal cord. Different kinds of tissues/