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24 Cards in this Set
- Front
- Back
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Define Epithelium
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The thin tissue forming the outer layer of a body's surface and lining the alimentary canal and other hollow structures.
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What is the basement membrane
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A thin nonliving layer called the _____ anchors epithelium to underlying connective tissue.
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Function and location of Tight Junctions
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Close space between cells by fusing cell membranes
Ex: Cells that line the small intestine |
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Function and location of Desmosomes
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Bind cells by forming spot welds between cell membranes
Ex: Cells of the outer skin layer |
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Gap Junctions function
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Form tubular channels between cells that allow exchange of substances
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Epithelial Tissue Function
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Protection, Secretion, Absorption, excretion
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Connective tissue function
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Bind, support, protect, fill spaces, store fat, produce blood cells
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Muscle tissue function
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movement
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Nervous tissue function
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transmit impulses
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Simple cuboidal epithelium
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secretion absorption
surface of ovaries, lining of kidney tubules, ducts of certain glands |
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Simple squamous epithelium
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Filtration diffusion osmosis covers surface
air sacs of lungs, walls of capilaries |
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Simple Columnar epithelium
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Protection, secretion, absorption
lining of uterus, stomach, intestines |
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Pseudostratified columnar epithelium
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Protection, secretion, movement of mucus and substances
lining of respiratory passages |
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stratified squamous epithelium
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Protection
outer layer of skin, linings of cavities |
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Stratified cuboidal epithelium
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Protection
Linings of larger ducts of mammary, sweat, salivary glands and pancreas |
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Stratified columnar epithelium
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Protection and secretion
Parts of male urethra and pharynx |
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Transitional epithelium
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Distensibility, protection
Inner lining of urinary bladder and linings of ureters and part of urethra |
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Glandular Epithelium
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Secretion
Salivary, sweat and endocrine glands |
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Fibroblasts
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Secrete proteins which become fibers
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Macrophages
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clear foreign particles from tissues by phagocytosis
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Mast Cells
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Release substances that may help prevent blood clotting and promote inflammation
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Collageneous fibers (white fibers)
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hold structures together
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Elastic Fibers (yellow fibers)
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Provide elastic quality to parts that stretch
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Reticular fibers
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Form supportive networks within tissues
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