👉 Chondroplast is a type of bone that contains cartilage. It is composed primarily of cartilage cells, which are made up of collagen fibers and other components. Cartilage is responsible for cushioning bones in joints, allowing them to move smoothly and without pain. Chondroplasts are found in the endochondral ossification center (EOC) of the vertebral column, where they form the outermost layer of cartilage that lines the ends of long bones.