BIOL 01113 Lecture Notes - Lecture 1: Hyaline Cartilage, Hyaline, Cartilage
22 Sep 2016
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Document Summary
Epithelial- found on every internal and external body surface. Secretion- forms glands that produce substances like hormones and oils. Sensation- detects changes in internal and external environments (tastebuds) Simple epithelial- consists of a single cell layer. Stratified epithelial- consists of more than one cell layer. Answer: by number of cell layers and cell shape. Squamous epithelium is thin enough to form a membrane through which compounds can move via diffusion. Cuboidal and columnar usually form mucus membranes. Simple epithelial has one layer of cells and usually functions as a diffusion or absorption membrane. Stratified epithelium has many layers so it is typically used for protection. Glandular epithelial- glands are classified on how their secretions are released. Endocrine glands- secrete their fluids usually hormones, directly into the bloodstream without the use of ducts. Allows fluids to have a widespread distant effect in different areas of the body.
