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Practical 2 Notes- epithelia-Medicine, Study notes of Medicine

The University of SheffieldMedicine

This document is a set of notes on epithelial tissues, likely from a histology or anatomy course. It covers the structure, function, and types of epithelia, including simple (squamous, cuboidal, columnar) and stratified (squamous non-keratinizing, squamous keratinizing, pseudostratified) epithelia. The notes explain the roles of microvilli and cilia, the composition of basement membranes, and the importance of epithelial junctions (tight junctions, desmosomes, gap junctions). It also discusses glandular epithelia, distinguishing between serous and mucous glands, and types of exocrine secretion (holocrine, merocrine, apocrine). The tone is academic, aimed at helping students understand the histological features and functions of epithelial tissues.

Typology: Study notes

2024/2025

Available from 03/12/2025

charles-khama
charles-khama 🇮🇹

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3/12/25, 5:33 PM about:blank Practical 2 Notes- epithelia Practical 2 Notes: Epithelia _ tien ong cases oft iho orm ye, esingona sme Epithelia line surfaces and form barriers for: Protection e.g. skin Absorption e.g. gut 3 Secretion e.g. pancreas ‘Type of Epithelia Description Simple Single layer of cells on a basement membrane Stratified Two or more layers of cells on a basement membrane Simple Epithelia Single layer of flattened plate-like cells ona basement ‘membrane Very thin cytoplasm — stretched over a large surface area Has parallel oval nuclei (1 per cell) O_Lines inside of (endothelium) 1D _Lines outside of Line ‘Simple squamus epithelium (peritoneum) Forms barrier between air and blood in lung alveoli; useful as cytoplasm is so thin ‘Simple Cuboidal Epithelium 15