BIOL 240 Lecture Notes - Lecture 4: Simple Squamous Epithelium, Collagen, Elastin
Document Summary
Number of cells: simple, stratified, pseudostratified. Cell shape: squamous, cuboidal, columnar, transition. Types: simple squamous, simple cuboidal, simple columnar, ciliated, non-ciliated, stratified squamous, keratinized, non-keratinized, stratified cuboidal, stratified columnar, pseudostratified, ciliated, non-ciliated, transitional. One layer: simple epithelial tissues: diffusion and filtration. More than one layer: stratified epithelial tissue: protection. One layer: simple epithelial tissues: secretion and absorption, ciliated types propel mucus or reproductive cells. More than one layer: stratified epithelial tissues: protection, these types are rare in humans. More than one layer: stratified epithelial tissue: protection, stretching to accommodate distension of urinary structures. Epithelial cells that make and secrete a product that form glands. Er and golgi apparatus are well-developed in glandular cells. Glands classified as: unicellular (goblet cells, multicellular glands, classified in two different ways, by shape, simple, compound, tubular, by how products are delivered, exocrine and endocrine glands. Exocrine gland: secretions: sweat, saliva, etc, secretions transported by ducts, located close to target cells, ex.
