PNB 2264 Lecture Notes - Lecture 2: Dehydration Reaction, Electric Field, Hydroxylapatite
23 Jan 2017
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Document Summary
Collections of cells and cell products that perform specific functions. 4 tissue types (form all the structures of the human body) Functions of epithelial tissue: provide physical protection, barrier, exchange, secretion, gland cells, absorption, absorption of digestion nutrients. Hemidesmosomes - attach cells to basement membrane. Characterized by cell and non-living extracellular matrix. General functions: binding, support, protection, insulation (ex: fat) Specialized cells fibroblasts ; fibrocytes (ct proper) Suffix blast - refers to cells actively secreting connective tissue maxtrix. Lack of vitamin c defective collagen synthesis. Improper collagen means you lose the amount of proper high tensile strength) Delicate network supports individual cells in certain organs ex: spleen liver. Loose meshwork with all three fiber types. Collagen fibers are connected parallel to each other. Avascular (pierce cartilage harder to treat cause no blood. Articular cartilage of joints = one example. Enzymes to break down the organic matrix and acid enzymes to demineralize the minerals.
