Education 512
Final Project
Created by…
Stephen Chitraroff
Project Components:
Powerpoint Project……….Epithelial Lecture
Excel Component………...Visual Outline
Word Component…………Student Notes
Powerpoint Component…...Student Quiz
Why are Epithelial Tissues
Important to Me?
Anatomy and Physiology
MVHS Science
Mr. Chitraroff
Begin
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What is a Tissue?
organelles
cells
tissues
tissue systems
organs
organ system
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organism
What is Epithelium?
Epithelial tissues are widespread throughout
the body and are responsible for:
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covering all body surfaces.
lining body cavities and hollow organs.
form the major tissues in glands.
perform a variety of functions including:
Absorption
 Excretion
 Diffusion
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 Filtration
 Secretion
 Protection
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What are the 3 Main Categories of
Epithelium?
• The 3 main categories of epithelium are:
– Squamous (squashed or flattened).
– Cuboidal (cube-shaped)
– Columnar (rectangular)
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Epithelial Categories
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Epithelium Can Have Different Layers!
Form
Function
Locations
Simple
Single layer
Absorption
Blood Vessels
Stratified
Multiple layers
Protection
Skin, Dig. Tract
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Single Vs. Stratified Epithelium
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Epithelium Index Page
Cilia and
Microvilli
Simple Squamous
Stratified
Squamous
Transitional
Simple Columnar
Ciliated Simple
Columnar
Psuedostratified
Columnar
Stratified
Columnar
Simple Cuboidal
Stratified Cuboidal
Cilia and
Microvilli
• Cilia are protein-based structures that move in a
wavelike fashion.
– Function: Cilia function to filter respiratory tracts or
move objects through a cavity.
• Microvilli: Microvilli are globular structures.
– Function: used primarily for absorption and secretion of
materials.
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Simple Squamous
• Locations: Capillary
walls, alveoli of the lungs,
covering visceral organs,
lining body cavities
• Function: diffusion and
filtration
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Stratified Squamous
• Locations: Integument (Skin), mouth, vagina, anus.
• Function: protection.
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Transitional Epithelium
• Locations: Ureter, urinary bladder.
• Function: distention and elasticity.
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Simple Columnar Epithelium
• Locations: lining of
the digestive tract.
– Small intestine
– Large intestine
– Rectum
• Function: Protection,
secretion, absorption.
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Ciliated Simple Columnar Epithelium
• Locations: lining of the
respiratory tract.
– trachea
– Nasal passageway
– Bronchi of lungs
• Function: move pollutants
to the mouth where they are
swallowed.
– Filtration.
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Ciliated Pseudostratified Columnar
Epithelium
(PSE) (PSE)
• Locations: lining of the respiratory tract.
– trachea
– Nasal passageway
– Bronchi of lungs
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• Function: move pollutants to the mouth where they are swallowed.
– Filtration.
Ciliated PSE
Free Surface
Basement
Membrane
NOTE: This type of epithelium is often confused
with stratified columnar epithelium due to the
arrangement of the nuclei.
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Stratified
Columnar
Epithelium
• Locations: largest ducts of the salivary glands.
– Submandibular gland (lower jaw)
– Parotid gland (side of face)
– Mucosal glands (amylase-releasing)
• Function: passageway for digestive enzymes released by
salivary glands.
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Simple
Cuboidal
Epithelium
• Locations: lining kidney tubules, salivary ducts and pancreatic
ducts (pancreas).
• Function: secretion, excretion and absorption.
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Stratified Cuboidal Epithelium
• Location: sweat ducts in the dermis layer of the skin.
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• Appearance: generally 3-4 layers thick.
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• Function: secretion of and transportation of sweat to the skin’s
surface.
Transitional Epithelium
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