ANP 1105 Lecture Notes - Lecture 1: Stratified Squamous Epithelium, Respiratory Tract, Salivary Gland
Document Summary
Section 1: structural organization of the human body. 1. 35 indicate the 2 citeria used to classify epithelial cells. Want a thin air for easy transport squamous. Simple epithelia depends on the cell shape one layer of cells. Stratified epithelia; based on the topmost level of cells is the name of the cell. Despriction: a single layer of flattened cells with disc shaped central nuclei and sparse cytoplasm, the simplest of epithelia. Function: allows materials to pass by diffusion and filtration in sites where projection is not important, secretes lubricating substances in serose. Lubricate allows one tissue to pass one another. Location: kidney glomeruli, air sacs of lungs, lining of heart, blood vessels and lymphatic vessels, lining of ventral body cavity. Depending on where they are, they might have a special name. Photomicrograph: single squarmous epithlelium forming parts of the air sac wall. Two locations: endothelium; lining of blood vessels, and heart.