ANTH 317 Lecture Notes - Lecture 4: Hyaline Cartilage, Medullary Cavity, Flat Bone
Document Summary
Bone is a special form of connective tissue. Special due to it"s dense cellular matrix becoming mineralized. Support body, protect internal organs, allows body to move along with muscles and nerves. As an organ we get blood cell production in marrow of bone, more when younger, when older more is used for storing fat. Acts as storage for fat and calcium for the rest of the body. Dynamic: can grow, repair, and change shape. Piezoelectric effect: change shape due to pressure. Lightweight but strong, less than 20% of your body weight. Composition: 38% organic, primarily collagen, 62% inorganic, primarily hydroxyapatite (complex phosphate of calcium) which is what remains after decomposition. Types of bone, classified by shape and structure. Shape: long (such as limb bones), flat (skull bones), irregular (carpals, tarsals, vertebrae. Cortical/compact: strong and dense, the exterior of bones. Epiphysis - the end of the bones where the articular surfaces are, the secondary center of ossification.
