Long bone is omewhat cylinderical and has more length than width. They act like levers when the muscles contracts. Found in arms,limbs, fingers etc. My Text Soluton Whereas flat bones is somewhat misnomer type and has curves (most of the time). It acts like point of attachments and helps in protection of internal organs. Usually found in skull, shoulder, ribs etc. Chemistr For Comparison of cortical and cancellous bone by Cheg Compact bone or cortical bone is denser and stronger than the cancellous or spongy bone. It can be found under periosteum and diaphyses. Each unit of compact bone is called osteon or haversian system which contains haversian canal which contains calcified concentric rings known as lamella. Whereas spongy bone contains osteocytes filled lacunae(unarranged unlike compact bone). Chemistry For... 14th Edition View all solu Osteoblast cells of mesenchymal stem cell orign is responsible for bone cell formation whereas osteoclast cells are responsible for bone resoption, which is present beneath the periosteum. Top Che help rig When the bone formation is completed almost(60-70%)all the Osteoblast cells die by the process of apoptosis rest forms the lining of the bone. It is important process in the formation of bone cells. Bone resoption is a process in which the osteoclasts breaks the bone tissues which releases minerals, helping in transferring calcium from bone to blood which is essential for our blood. The osteoblast linage comunicate with each other through cell-cell contact, cell-bonematrix interaction and diffusible paracrine factors. Hopefully answered your question efficiently
