General Biology/Tissues

General Biology

=Vertebrate tissues = Definition of tissue: an aggregation of cells, usually of the same kind, organized to perform a common function. A group of similar cells organized into a structural and functional unit (Raven/Johnson). Primary categories of adult tissues (non-dogmatic categories of convenience):


 * 1) Epithelial tissue
 * 2) Connective tissue Includes bone and blood tissues
 * 3) Muscle tissue
 * 4) Nervous tissue