Epithelial Tissue

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Stephen E. Fish, Ph.D. Mitchell L. Berk,
Ph.D. Marshall University J. C. E. School of
Medicine
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Note to instructors I use these PowerPoint
slides in histology lectures that I give to first
year medical students. Copy the slides, or just
the images into your own teaching media. We all
know that teaching science often requires
compromises and simplification for specific
student populations, or the requirements of a
specific course. Please feel free to offer
suggestions for improvements, corrections, or
additional illustrations. I would be pleased to
hear from anyone who finds my work useful, and am
always willing to make it better. Also, the
images have been compressed to screen resolution
to keep PowerPoint file size down, and I can
provide them at any resolution. Contact me about
the illustrations and Mitchell L. Berk about the
photomicrographs. Stephen E. Fish,
Ph.D. Fish_at_Marshall.edu Berk_at_Marshall.edu
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Introduction to Epithelia, Simple Stratified
Types
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Common features of epithelia
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Basement membrane vs. basal lamina
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Cellular junctions bind epithelial cells together
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Simple epithelia
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When looking at slides you are looking at a 2D
plane through a 3D tissue
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Venule lined with endothelium
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Mesothelium on small intestine
Simple squamous
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Simple cuboidal in thyroid follicles(how tall
depends upon activity)
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Simple cuboidal in kidney tubules
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Simple columnar in gall bladder
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Microvilli are a surface modification on some
columnar cells
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Simple columnar epithelia with microvilli
goblet cells line the small intestine
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Simple columnar with goblet cells microvilli in
small intestine
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Another surface modification of columnar cells is
cilia
How can you tell cilia from microvilli?
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Simple columnar with cilia in theuterine tube
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Stratified epithelia
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A caution
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Stratified squamous Non-keratinizing
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Vagina
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Thin skin has a small amount of keratin
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Thin skin
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Thick skin has a lot of keratin
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Stratified squamous keritinizing epithelium
(thick skin)
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Sherman says
My favorite type of epithelia is crispy turkey
skin