PLN 103 Lecture Notes - Lecture 5: Calcium Phosphate, Calcium Hydroxide, Jigsaw Puzzle
13 Dec 2016
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Document Summary
Made of cartilage, ligaments, and connective tissue. Functions of the skeletal system: support, storage of minerals & lipids, blood cell production, protection, leverage. Range in size of a grain of sand a quarter. Complex shapes with short, flat, notched, and ridges surfaces. Spinal vertebrae, pelvic bones, and some bones in skull. Extensive surface area causes most muscles to be attached there. Consist of a shaft (diaphysis) with two ends (epiphyses) Femur is the largest and heaviest bone in body. Found in arms, forearms, thigh, palms, soles, fingers, and toes. Inside tendons near joints like knees, hands and feet. Elevations and projections where tendons and ligaments attach. Depressions, grooves, and tunnels for blood vessels or nerves. Bone cells osteoblasts, osteocytes, osteoclasts, osteogenic cells. Inorganic component (2/3 of mass) calcium phosphate calcium hydroxide hydroxyapatite crystals (hc)) Organic component (1/3 of mass) mainly made of collagen fibres and the osteoblasts secrete materials.
