PNB 2264 Lecture Notes - Lecture 2: Hyaline, Purpura, Hydroxyproline
24 Jan 2017
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Document Summary
Describe the general characteristics (structure and function) of epithelial and connective tissue. Differentiate among the classes of epithelial and connective tissue. Tissues: collections of cells and cell products that perform specific functions. Cells are organized into four main tissue types: epithelium, connective, nervous, muscle. Every organ and structure in the body is made up of some combination of these. Epithelium and one category of connective tissue (connective tissue. Cartilage and bone will be discussed with musculoskeletal anatomy, and the histology of muscle and nervous tissue will be covered later in the semester. Epithelial tissue covers or lines surfaces and cavities of the body as well as secretory glands. Physical protection against abrasion, pathogens, chemical attack. Reduces friction, controls vessel permeability, absorption, secretion. Cells have a regular shape. (apical) surface (that faces the outside or internal cavity) and an attached basal surface. Cellularity (cell junctions) cells connected to other cells w/o extracellular.
