NATS 1610 Lecture Notes - Lecture 14: Mitosis, Antibody, Keratin
30 Oct 2015
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Nats 1610-lecture14 from cells to tissues to body. Simple squamous epithelium: description: single layer of cube-like cells with large spherical central nuclei, function: secretion and absorption. Location: kidney tubules, ducts and secretory portions of small glands, ovary surface. Simple columnar epithelium: description: single layer of tall cells with round to oval nuclei . some cells (bear cilia) layer may contain mucus secreting unicellular glands (goblet cells, function: absorption, secretion of mucus and enzymes. Location: non-ciliated type lines most of the digestive track, gallbladder, excretory ducts of some glands. Ciliated variety lines small bronchi, uterine tubes, and some regions of the uterus. Pseudo-stratified ciliated columnar epithelium: description: single layer of cells of different heights, some not reaching the free surface . the nuclei seen at different levels. It may contain mucus secreting goblet cells and bear cilia: functions: secretion mucus and propulsion of mucus by ciliary action.
