Bone is made mostly of collagen and calcium. This combination works to make the bones strong and flexible at the same time, enabling them to be protective and rebound from stress fractures.Know More
Bones are made up of several complex parts that are all living and growing tissue. Unlike bones that are typically seen in outside environments, human bones are dense, growing and somewhat soft. The three main parts of a bone are the periosteum, compact bone and cancellous. The periosteum is the outer layer of the bone, and it provides the blood vessels that nourish the inner part of the bone. The compact bone gives the bones the strength needed to function and is very hard. Cancellous bone makes up the inside of the bone surrounding the marrow; it is softer and sponge-like, unlike the compact bone.
The bone marrow is located within the inside of the bones. Bone marrow is an important part of bones, but it is not like the rest of the bone. It is jelly like and thick. The rest of the bones work to protect the marrow, but the cancellous layer protects it the most. Bone marrow is responsible for creating blood cells.Learn more about Bones
Unearthed in mid-May 2014, the longest and largest bone ever found belongs to an as-yet unnamed species of titanosaur that was discovered in Patagonia. The bone, a femur, is well over 6 feet long.Full Answer >
The main function of bone marrow is to produce blood cells. Human bone marrow can produce hundreds of billions of new cells every day. Other functions of bone marrow include storing fat and helping to remove old blood cells from circulation.Full Answer >
Cortical bone is a dense and rigid layer of calcium-rich osseous tissue that makes up the outer layer of a bone, explains InnerBody. This compact bone layer is cylindrical in shape with a honeycombed structure, providing thousands of tiny canal-like passageways for nerves and blood vessels.Full Answer >
Living bone contains about 10 to 20 percent water and 60 to 70 percent bone mineral, as explained by the University of Cambridge. The remaining material is mostly collagen with trace amounts of proteins and inorganic salts.Full Answer >