CRIM 356 Lecture Notes - Lecture 2: Osteon, Osteocyte, Osteoblast
13 May 2016
School
Department
Course
Professor
Document Summary
Biology of the human skeleton i and ii. Bone is a composite tissue: 35% organic (type i collagen, gives compressive resistance, 65% mineral (imperfect hydroxyapatite, gives rigidity. Biological stratigraphy: life history reconstruction based on recovering information from single layers or groups of layers, layers or increments are formed by cells, contributes to the biological profile, identi cation of a person, age and sex, any other information. Bone microstructure: bone is dynamic: has a blood supply inside it. Collagen formation and bone formation: newly formed bone is mostly all collagen, has not yet mineralized, younger osteones dark. The bone cells and their function: the osteoblast - bone forming cell, the osteoclast - bone removing cell, the osteocyte - the controller, listener and communicator, osteoblasts transform themselves into osteocytes, send electrical signals, cannot go anywhere. Creation of a single osteon: longitudinal hole. Week 2 biology of the human skeleton i and ii.
