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Education 512Education 512Final ProjectFinal Project
Project Components:
Powerpoint Project……….Epithelial Lecture
Excel Component………...Visual Outline
Word Component…………Student Notes
Powerpoint Component…...Student Quiz
Created by… Stephen Chitraroff
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Why are Epithelial Why are Epithelial Tissues Tissues
Important to Me?Important to Me?
Anatomy and PhysiologyMVHS ScienceMr. Chitraroff
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Begin
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What is a Tissue?What is a Tissue?
organelles
cells
tissues
tissue systems
organs
organ system
organismMain Menu
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What is Epithelium?What is Epithelium?
Epithelial tissues are widespread throughout the body and are responsible for:
covering all body surfaces. lining body cavities and hollow organs. form the major tissues in glands. perform a variety of functions including:
AbsorptionAbsorption FiltrationFiltration ExcretionExcretion SecretionSecretion DiffusionDiffusion ProtectionProtection
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What are the 3 Main What are the 3 Main Categories of Epithelium?Categories of Epithelium?
• The 3 main categories of epithelium areThe 3 main categories of epithelium are:– Squamous (squashed or flattened).– Cuboidal (cube-shaped)– Columnar (rectangular)
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Epithelial CategoriesEpithelial Categories
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Epithelium Can Have Epithelium Can Have Different Layers!Different Layers!
FormForm FunctionFunction LocationsLocations
SimpleSimple Single layer Absorption Blood Vessels
StratifiedStratified Multiple layers Protection Skin, Dig. Tract
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Single Vs. Stratified Single Vs. Stratified EpitheliumEpithelium
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Epithelium Index PageEpithelium Index Page
Cilia and Microvilli
Simple Squamous Stratified Squamous
Transitional
Simple Columnar Ciliated Simple Columnar
Psuedostratified Columnar
Stratified Columnar
Simple Cuboidal Stratified Cuboidal
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Cilia and Cilia and MicrovilliMicrovilli
• CiliaCilia 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: Microvilli are globular structures.– Function: used primarily for absorption and secretion of
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Simple SquamousSimple Squamous
• Locations: Capillary walls, alveoli of the lungs, covering visceral organs, lining body cavities
• Function: diffusion and filtration
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Stratified SquamousStratified Squamous
• Locations: Integument (Skin), mouth, vagina, anus.
• Function: protection. Main Menu
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Transitional EpitheliumTransitional Epithelium
• Locations: Ureter, urinary bladder.
• Function: distention and elasticity.
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Simple Columnar EpitheliumSimple Columnar Epithelium
• Locations: lining of the digestive tract.– Small intestine
– Large intestine
– Rectum
• Function: Protection, secretion, absorption.
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Ciliated Simple Columnar Ciliated Simple Columnar EpitheliumEpithelium
• 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 Ciliated Pseudostratified Columnar EpitheliumColumnar Epithelium
(PSE) (PSE) (PSE) (PSE)
• 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 PSECiliated PSE
NOTE: This type of epithelium is often confused with stratified columnar epithelium due to the arrangement of the nuclei.
Free Surface
Basement Membrane
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Stratified Stratified Columnar Columnar EpitheliumEpithelium
• 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 Simple Cuboidal Cuboidal
EpitheliumEpithelium
• Locations: lining kidney tubules, salivary ducts and pancreatic ducts (pancreas).
• Function: secretion, excretion and absorption.
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Stratified Cuboidal EpitheliumStratified Cuboidal Epithelium
• Location: sweat ducts in the dermis layer of the skin.
• Appearance: generally 3-4 layers thick.
• Function: secretion of and transportation of sweat to the skin’s surface.
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Transitional EpitheliumTransitional Epithelium
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