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IMED1001 Study Guide - Quiz Guide: Desmosome, Mucus, Microvillus
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3 Pages
13 Views
Fall 2018

Department
Integrated Medical Sciences
Course Code
IMED1001
Professor
avinash
Study Guide
Quiz

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Important Notes - Epithelium:
Epithelium:
-covering
-lining
Histology:
-Tubular structure will be seen as circle because in histology we look at it as SECTIONS
-Compactly arrange cells
-= little or no gaps between cells
-Cells are connected by special microscopic arrangements called junctions
-Strong to make sure doesn't knock over
-Control what passes through
Structure:
-Epithelium is a compact sheet with cells join together
-no space for blood vessels or capillaries
-=avascular
Layers/Location:
-Some cells of epithelium rest on a basement membrane
-BM is partly produced by epithelial cells and connective tissues (non cellular)
-Just a layer of bio macromolecules!!
About Junctions:
-If cells are small, junctions between them are largely specialised protein molecules
Adhering Junctions:
-Have strong bonds but eventually cells will be lost from an epithelium
Occluding Junctions:
-Seal off
-Control what passes through
Both adhering and occluding junctions have various sizes and shapes
Gap/Communicating Junctions:
= allows communication!
2 cell membranes meet = “junction”

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Description
Important Notes Epithelium: Epithelium: covering lining Histology: Tubular structure will be seen as circle because in histology we look at it as SECTIONS Compactly arrange cells = little or no gaps between cells Cells are connected by special microscopic arrangements called junctions Strong to make sure doesnt knock over Control what passes through Structure: Epithelium is a compact sheet with cells join together no space for blood vessels or capillaries =avascular LayersLocation: Some cells of epithelium rest on a basement membrane BM is partly produced by epithelial cells and connective tissues (non cellular) Just a layer of bio macromolecules!! About Junctions: If cells are small, junctions between them are largely specialised protein molecules Adhering Junctions: Have strong bonds but eventually cells will be lost from an epithelium Occluding Junctions: Seal off Control what passes through Both adhering and occluding junctions have various sizes and shapes GapCommunicating Junctions: = allows communication! 2 cell membranes meet = junction
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