301126 Lecture Notes - Lecture 10: Multinucleate, Insulin, Aorta
Document Summary
Tissues : tissues are a group of structurally and functionally similar cells that come together to form common functions, histology is the study of tissues. Tissue types: there are 4 primary tissue types which are distinguished by cell numbers and the composition of the extracellular matrix (ecm, epithelial = lining tissue/glands. No visible ecm: connective = connects different tissues to one another. Has 2 sub- types proper = loose & dense + specialised = cartilage, bone, blood: muscle = movement tissue (contractile properties). Small amounts of ecm and is arranged in cellular lines: nervous = signal transmission (send + receive). Suited for diffusion/transportation: can have 2 or more layers = stratified (thick and effective barriers) Cell shape : squamous flattened, thin, pancaked (found in blood vessels and air sacs of lungs, cuboidal cubes, squares, thin (respiratory passages, ducts of glans, diffusion, columnar rectangles (absorption, propulsion through hollow organs small.
