Modified, reshaped, remodeled, and overhauled. Purpose was really to remodel the bone of the jaw), and it's greatlyĪffected by nutritional and metabolic changes. Made to grow in different ways by clever tricks of orthodontia and surgery (theīraces you may once have worn were physically affixed to your teeth, but their Bone responds to injury by rapid healing. Nothing couldīe further from the truth it's about the most dynamic material in the body.īone is a reservoir for calcium and phosphorus, and there is a constant flux of One other misconception about bone is that it's a static tissue. It's obvious that the script writers were more concerned with drama Superman would have trouble performing this trick, and theĪverage person would have trouble doing it to a sheep rib, let alone one fromĪn elk. Try this sometime if you can't get hold of an elk rib, aīeef rib will do. In which the protagonist holds up a rib bone from an elk, then snaps it in two There is a scene in the motion picture Never Cry Wolf Relatively light, but it has very high tensile and compressive strength, and a Ideal for its functions of structural and physiological support. ![]() The cellular component is vital to boneįunction, as we'll see, but in terms of the total volume, it's a comparativelyīone is a truly remarkable structural material, with properties that make it However, the extracellular matrix is calcified, and the fibers (which areĬollagen) are very highly ordered. SLIDES USED IN THIS EXERCISE: 18, 18A, 17, VM05, 98, 80, VM01, VM10, 79, 81īone, like other connective tissues, has cells, fibers, and a matrix. The good is oft interred with their bones.
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