BIOL 2443 Lecture Notes - Lecture 9: Sesame, Bone Marrow, Skeleton
Document Summary
Internal tissue organization: bone markings, structure features, marks, bone shapes. Irregular: complex shape: sutural: small, flat, irregularly shaped bones, short: boxy with equal dimensions, flat: thin parallel surfaces, long: bones that are long and slender, sesamoid: small, round, flat, shaped like a sesame seed. September 12, 2014: 6-2 classification of bones, sutural bones (wormian bones, small, flat, irregularly shaped bones, between flat bones of the skull, number varies among individuals. September 12, 2014: structure of a long bone, diaphysis (shaft, wall of compact bone, central space called medullary cavity (marrow cavity, epiphysis (wide part at each end) Interacts with calcium hydroxide, ca(oh)2, to form crystals of hydroxyapatite, ca10(po4)6(oh)2. Incorporates other calcium salts such as calcium carbonate (caco3) and ions (e. g. , magnesium: a bone lacking a calcified matrix looks normal, but is very flexible, matrix proteins, one third of bone matrix is protein fibers (collagen) It is yellow because it stores fat: functions of periosteum:
