Lab Exercise Classification of Tissues: Epithelial Tissue

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Lab Exercise Classification of Tissues
Epithelial Tissue

• Tissue a collection of similar cells working
  together
• Epithelial Tissue cells that line the cavities
  and surfaces of organs structures
• Pg. 56 of book and page 12-14 of packet

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Classification of Epithelia

• 1. Number of cell layers

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• 2. Shape of the cells

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Lumen The open space above the apical surface of
a structure
Apical Surface
LUMEN
Epithelial Tissue
Connective Tissue
Basement Membrane
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Lumen The inner open space or cavity of a
tubular organ, as of a blood vessel or an
intestine.
Apical Surface
Connective Tissue
LUMEN
Epithelial Tissue
Basement Membrane
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I will use BOTH microscopes AND diagrams to test
you on epithelial tissues. Make sure you look
at the microscopes in lab and the diagrams in
this presentation.
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Simple Squamous EpitheliaAlveoli (air sacs) of
Lungs
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(No Transcript)
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Simple Squamous Epithelium
L
L
L
L
L
L
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Simple Cuboidal EpitheliaKidney Tubules
Kidney Tubules
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Apical surface
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Simple Cuboidal Epithelium
L
L
L
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Cross Section through the Small Intestine
Lumen
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Simple Columnar Epithelium
Apical surface
Basement membrane
Connective Tissue
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Simple Columnar Epithelium
L
Lumen
L
L
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Stratified Squamous EpitheliaSkin
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Apical surface
Lumen
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Stratified Squamous Epithelium
LUMEN
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Stratified Squamous Epithelium
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Pseudostratified Ciliated Columnar
EpitheliaTrachea (cross section)
Lumen
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(No Transcript)
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Pseudostratified Ciliated Columnar Epithelium
LUMEN
Cilia
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Transitional EpitheliaUrinary Bladder
Lumen
Lumen
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(No Transcript)
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Transitional Epithelium
LUMEN
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PRACTICE TIME!

• Lets see how you do!

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Name this tissue.
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Simple Cuboidal Epithelium

• Found where? Can you identify the lumen? Apical
  and basement membrane?

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Name this tissue
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Stratified Squamous Epithelium

• Where in the body is this found? Can you find
  the lumen/apical surface/basement membrane? What
  is found under the basement membrane?

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Name this tissue
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Transitional Epithelium

• Where can you find this in the body?

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Name this tissue
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Simple Squamous Epithelium

• Note its just ONE layer of flat shaped cells!
  Where in the body do you find this epithelium?

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Name this tissue.
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Simple Squamous Epithelium (again!)
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Name this tissue
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Simple Columnar Epithelium

• Can you see the goblet cell? What do they make?

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Name this tissue.
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Pseudostratified Ciliated Columnar Epithelium

• Do you see the cilia? Where in the body can you
  find this epithelium?

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Epithelia Image Gallery
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Simple Squamous Epithelia
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Simple Squamous Epithelia
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Simple Cuboidal Epithelia
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Simple Cuboidal Epithelia
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Simple Cuboidal Epithelia
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Simple Columnar Epithelia pointer is on the
basement membrane
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Simple Columnar Epithelia pointer is on a
goblet cell
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Simple Columnar Epithelia
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Simple Columnar Epithelia
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Non-Keratinized Stratified Squamous Epithelia
pointer is on the basement membrane
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Stratified Squamous Epithelia
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Stratified Squamous Epithelia
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Pseudostratified Ciliated Columnar Epithelia
pointer is on the basement membrane
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Pseudostratified Ciliated Columnar Epithelia
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Pseudostratified Ciliated Columnar Epithelia
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Pseudostratified Ciliated Columnar Epithelia
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Transitional Epithelia pointer is on the
basement membrane
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Transitional Epithelia pointer is on the
basement membrane
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Transitional Epithelia
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Transitional Epithelia