Now, right next to our medullary cavity we have this white portion shown by this section here that basically goes around the bone in both directions. This is known as our compact bone and the compact bone is also known as the cortical bone. This is a very dense and a very heavy portion of the bone. The compact bone basically contains the yellow bone marrow and the yellow bone marrow is responsible for actually storing the adipose tissue. The adipose tissue or the cell contains the cells that store our fat in the form of triglycerides. Now this compact bone also is responsible for giving our bone strength, for giving our bone tensile strength as well as our compressive strength.