Anatomy - epithelial cells

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simple squamous epithelium

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<p>-single layer of flattened cells</p><p>-function: Passage of materials by diffusion and filtration.</p><p>-location: kidney, air sacs of the lungs</p>

-single layer of flattened cells

-function: Passage of materials by diffusion and filtration.

-location: kidney, air sacs of the lungs

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simple cuboidal epithelium

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<p>-single layer of cube-like cells with large, spherical central nuclei</p><p>-function: secretion and absorption.</p><p>-location: kidney tubules and ovary surface</p>

-single layer of cube-like cells with large, spherical central nuclei

-function: secretion and absorption.

-location: kidney tubules and ovary surface

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12 Terms

1
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simple squamous epithelium

-single layer of flattened cells

-function: Passage of materials by diffusion and filtration.

-location: kidney, air sacs of the lungs

<p>-single layer of flattened cells</p><p>-function: Passage of materials by diffusion and filtration.</p><p>-location: kidney, air sacs of the lungs</p>
2
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simple cuboidal epithelium

-single layer of cube-like cells with large, spherical central nuclei

-function: secretion and absorption.

-location: kidney tubules and ovary surface

<p>-single layer of cube-like cells with large, spherical central nuclei</p><p>-function: secretion and absorption.</p><p>-location: kidney tubules and ovary surface</p>
3
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simple columnar epithelium

-single layer of column shaped cells.

-function: absorption: secretion of mucus, enzymes, and other substances; ciliated types propels mucus or reproductive cells by ciliary action.

-location: (Ciliated - with cilia) lines the digestive tract, gallbladder.

(with no cilia) uterine tubes and uterus.

<p>-single layer of column shaped cells.</p><p>-function: absorption: secretion of mucus, enzymes, and other substances; ciliated types propels mucus or reproductive cells by ciliary action.</p><p>-location: (Ciliated - with cilia) lines the digestive tract, gallbladder.</p><p>(with no cilia) uterine tubes and uterus.</p>
4
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pseudostratified columnar epithelium

-tissue that consists of a single layer of irregularly shaped and sized cells that give the appearance of multiple layers.

-function: secretion of mucus

-location: ( no cilia) in ducts of large glands

(with cilia): Lines the trachea and upper respiratory tract.

<p>-tissue that consists of a single layer of irregularly shaped and sized cells that give the appearance of multiple layers.</p><p>-function: secretion of mucus</p><p>-location: ( no cilia) in ducts of large glands</p><p>(with cilia): Lines the trachea and upper respiratory tract.</p>
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stratified squamous epithelium

more than one layer of cells, can be many, many layers. It is the thickest epithelial tissue.

-function: protects underlying tissues in areas subjected to abrasion.

-location: NON KERATINIZED lining of the esophagus and in the mouth

<p>more than one layer of cells, can be many, many layers. It is the thickest epithelial tissue.</p><p>-function: protects underlying tissues in areas subjected to abrasion.</p><p>-location: NON KERATINIZED lining of the esophagus and in the mouth</p>
6
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Keratinized stratified squamous epithelium

more than one layer of cells, can be many, many layers. It is the thickest epithelial tissue.

-function: protects underlying tissues in areas subjected to abrasion.

-location: epidermis of the skin

<p>more than one layer of cells, can be many, many layers. It is the thickest epithelial tissue.</p><p>-function: protects underlying tissues in areas subjected to abrasion.</p><p>-location: epidermis of the skin</p>
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stratified cuboidal epithelium

-Two layers of cube-like cells

-function: protection.

-location: salivary glands.

<p>-Two layers of cube-like cells</p><p>-function: protection.</p><p>-location: salivary glands.</p>
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stratified columnar epithelia

- serveral layers basal cells usually cuboidal and superficial cells elongated

- function:- protection and secretion

location round in male urethra and large ducts of some glands

<p>- serveral layers basal cells usually cuboidal and superficial cells elongated</p><p>- function:- protection and secretion</p><p>location round in male urethra and large ducts of some glands</p>
9
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transitional epithelia

Has characteristics of stratified cuboidal and stratified sqamous

-function-permits distension of urinary organs when they are filled with urine

location- epithelium of urinary bladder, ureters, proximal urethra

<p>Has characteristics of stratified cuboidal and stratified sqamous</p><p>-function-permits distension of urinary organs when they are filled with urine</p><p>location- epithelium of urinary bladder, ureters, proximal urethra</p>
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endocrine glands

glands that secrete chemicals called hormones directly into the bloodstream.

<p>glands that secrete chemicals called hormones directly into the bloodstream.</p>
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exocrine glands

ducts carry products of exocrine glands to epithelial surface

loction- mucus- secreting glands

<p>ducts carry products of exocrine glands to epithelial surface</p><p>loction- mucus- secreting glands</p>
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lateral surface features-cell junctions

-tight junctions

-adhesive belt junctions

-desmosomes

-gap junctions

loction- found at apical region of most epithelial tissues types

<p>-tight junctions</p><p>-adhesive belt junctions</p><p>-desmosomes</p><p>-gap junctions</p><p>loction- found at apical region of most epithelial tissues types</p>