Presentation Transcript
Class Topics :Class Topics Keep on beginning and failing. Each time you fail, start all over again, and you will grow stronger until you have accomplished a purpose - not the one you began with perhaps, but one you’ll be glad to remember
Anne Sullivan 9/21/2009 Page: 1 Epithelial Tissue
“Doc” Mullins CRT LRTC RCP
Capital High School
Honors Human Anatomy & Physiology I
Epithelial Tissue :Epithelial Tissue Simple squamous
Simple cuboidal
Simple columnar
Stratified squamous
Stratified cuboidal
Pseudostratified columnar
Transitional 9/21/2009 Page: 2 http://trc.ucdavis.edu/mjguinan/apc100/modules/TermsCells&Tissues/_topics.html
Simple Squamous :Simple Squamous Flattened cells
all cells have a free surfaces and are attached to basement membrane
Usually lining blood vessels, air sacs of lungs 9/21/2009 Page: 3 http://trc.ucdavis.edu/mjguinan/apc100/modules/TermsCells&Tissues/
epithelial/simplesquamous/simplesquamous.html
Stratified Squamous :Stratified Squamous Multiple layers of cells
Resist wear and tear
Categorized by shape of surface cells
Top layer are flat (Squamous)
Esophagus, oral cavity
Outer layer of skin
Keratinized 9/21/2009 Page: 4
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Simple Cuboidal :Simple Cuboidal Single layer of cube-shaped cells
Many times will have cilia or microvilli
Found in tubes or ducts
kidneys, liver, and many glands 9/21/2009 Page: 7
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Simple Columnar :Simple Columnar Elongated cylindrical cells
nucleus near the bottom (basement membrane)
Found in wall of uterus, small intestine
may contain microvilli 9/21/2009 Page: 9
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Pseudostratified Columnar :Pseudostratified Columnar Looks layered, really not
all cells anchored to basement membrane
Cell shape not uniform
nucleus placement not uniform
If cilia are present
Pseudostratified ciliated columnar epithelium
Found in respiratory tract 9/21/2009 Page: 11
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Glandular Epithelium :Glandular Epithelium Secretion of a product
goblet cells
found in PSCC and columnar epithelium
secrete mucus
Glands
endocrine - inside the body
exocrine - outside the body 9/21/2009 Page: 13
Connective Tissue :Connective Tissue Keeps other tissues in place
Protein fibers found in C.T.
1. Collagen
thick - resists stretching (tensile strength)
Tendons and ligaments, scar tissue
10% of human’s weight 9/21/2009 Page: 14
Connective Tissue :Connective Tissue 2. Elastin
Elasticity and Extensibility
can stretch and return to original shape
skin
3. Reticulin
very thin
not prominent 9/21/2009 Page: 15