BSCI 201 Lecture Notes - Lecture 11: Cell Membrane, Microvillus, Serous Membrane
28 Sep 2016
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Basil or stem cells present in epithelial tissues differentiate into new epithelial cells provided nutrients/oxygen diffuse from underlying vascularized connective tissues: all epithelial tissues are support by vascularized connective tissue- there is no exception. If the epithelial tissue separates from the connective tissue (which is the nutrients) then the epithelial tissue dies. Forms part of filtration membrane in the kidneys. Forms part of respiratory membrane in the lungs. Forms part of serous membrane in the ventral body cavity (abdominopelvic and thoracic: the epithelial cells here are called mesothelilal (know the specific tissue type and the location) Help with diffusion and involved with secretion. Diffusion of gases- part of respiratory so not surprised. Provides frictionless surfaces for the movement of substances. Mesothelial is for the secretion of serous fluid: acts as lubricant, again, to reduce friction as organs moves in the ventral body cavity, simple cuboidal epithelial.
