Anatomy: Epithelial Tissue Hon Flashcards


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created 5 years ago by staceysavage
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Use these cards to help you to identify the different types of tissues in the body.
updated 3 months ago by staceysavage
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Simple Squamous Epithelium

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Simple Cuboidal Epithelium

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Simple columnar Epithelium

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Pseudostratified Columnar Epithelium

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Stratified squamous epithelium

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Transitional Epithelium

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Goblet Cell

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Function of Goblet Cell

secretes mucus

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Tissue that displays distensibility

Transitional tissue has the ability to withstand pressure by swelling then returning to normal shape

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ET is classified by

shape of cells

number of layers

function

surface modifications

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endocrine glands

secrete product (hormones) directly into bloodstream

Example: pancreas, thyroid

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exocrine glands

secrete their product into a duct then out to a surface

example: mammary gland, sweat glands

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Key characteristics of ET

avascular

sits on basement membrane

tightly packed cells

good nerve supply, rapid cell division

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apical surface

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surface of ET cells that face open space

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basal surface

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surface of ET that sits on the basement membrane

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microvilli

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surface extensions of ET that help increase surface area for absorption

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cilia

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surface extensions on ET that move materials around (for example spread mucus over layer of cells)

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basement membrane

the sticky material that binds the ET to the CT

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tight junction

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forms a tight seal between two cells

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gap junction

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cell junction that allows two cells to communicate, electrical impulses may pass through

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desmosome

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binds two cells together where stretch may occur

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plasma

type of extracellular fluid found in blood

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interstitial fluid

type of extracellular fluid that bathes all body cells, allows for transfer of nutrients, gases, wastes between the blood and cells of the body

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holocrine

type of glandular tissue in which the whole gland ruptures to release the product (oil glands are an example)

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merocrine

type of glandular tissue where just the droplets of product are released, such as saliva and digestive enzymes

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apocrine

type of glandular tissue where a part of the cell pinches off containing the product. An example would be milk from the mammary glands