What exactly is found inside the bone that gives bone these types of properties? So basically, it's the extra, extracellular matrix that is found surrounding our cells and in between our cells that actually gives the bone these types of properties. So, before we discuss the different types of cells inside the bone and the structure of the bone, let's discuss the extracellular matrix of the bone. So the extracellular matrix consists of organic matter as well as inorganic matter. The organic component consists predominantly of a type of protein known as collagen. And it's the collagen that gives the bone the ability to resist tensile forces, it gives the bone tensile strength.