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Cards In This Set
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Tissue?
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A group of similar cells that preform a particular function.
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What are the 4 kinds of human tissue?
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Epithelial, connective, muscle, nerve.
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What are the characteristics of epithelial tissue?
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Covers your body, lines, secretes, the cells fit close together; avascular and innervated.
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Avascular?
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Doesnt have any blood vessels.
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Innervated?
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Supplied by nerve fibers.
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Classification of epithelium based on layering and cell type?
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Simple (1 layer), stratified; squamous: flat, irregular; cuboidal; columnar.
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Simple squamous?
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1 layer of flat, irregular cells.(lungs, kidneys, blood vessels).
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Simple cuboidal?
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L layer of square or rounded cells. (kidneys, ducks/tubes into the body).
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Simple columnar?
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1 layer of thin cells. (digestive tract).
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Stratified squamous?
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2 or more layers of flat, irregular cells. (skin, mouth, vagina) it can handle being scraped!
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Stratified cuboidal?
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2 or more layers of square/rounded cells. (ducts/tubes).
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Stratified columnar?
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2 or more layers of tall/thin cells. (urethra).
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Transitional?
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All cell types (bladder).
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Pseudostratified?
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1 layer of tall/thin cells with the nuclei in different positions. (trachea).
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Basement membrane?
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A sheet of connective tissue at the bottom of epithelial tissue joins it to whatever is below it.
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