Bio 225 Epithelial Cells

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8 Terms

1
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Simple squamous epithelium

  • Location: Air sacs of lungs and the lining of the heart, blood vessels, and lymphatic vessels.

  • Function: Allows materials to pass through by diffusion and filtration, and secretes lubricating substance.

  • **FLAT

<ul><li><p><strong>Location</strong>: Air sacs of lungs and the lining of the heart, blood vessels, and lymphatic vessels.</p></li><li><p><strong>Function</strong>: Allows materials to pass through by diffusion and filtration, and secretes lubricating substance.</p></li><li><p>**FLAT</p></li></ul><p></p>
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Simple cuboidal epithelium

  • Location: In ducts and secretory portions of small glands and in kidney tubules.

  • Function: Secretes and absorbs.

  • **For SECRETION

<ul><li><p><strong>Location</strong>: In ducts and secretory portions of small glands and in kidney tubules.</p></li><li><p><strong>Function</strong>: Secretes and absorbs.</p></li><li><p>**For SECRETION</p></li></ul><p></p>
3
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<p><strong>Simple columnar epithelium</strong></p>

Simple columnar epithelium

  • Location: Ciliated tissues are in bronchi, uterine tubes, and uterus; smooth (nonciliated tissues) are in the digestive tract, bladder.

  • Function: Absorbs; also secretes mucus and enzymes.

  • **Tall and Skinny

4
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Pseudostratified columnar epithelium

  • Location: Ciliated tissue lines the trachea and much of the upper respiratory tract.

  • Function: Secretes mucus; ciliated tissue moves mucus.

  • One layer, not exactly columnar

<ul><li><p><strong>Location</strong>: Ciliated tissue lines the trachea and much of the upper respiratory tract.</p></li><li><p><strong>Function</strong>: Secretes mucus; ciliated tissue moves mucus.</p></li><li><p>One layer, not exactly columnar</p></li></ul><p></p>
5
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Stratified squamous epithelium

  • Location: Lines the esophagus, mouth, and vagina.

  • Function: Protects against abrasion.

  • Flat and layered

<ul><li><p><strong>Location</strong>: Lines the esophagus, mouth, and vagina.</p></li><li><p><strong>Function</strong>: Protects against abrasion.</p></li><li><p>Flat and layered</p></li></ul><p></p>
6
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Stratified cuboidal epithelium

  • Location: Sweat glands, salivary glands, and the mammary glands.

  • Function: Protective tissue.

<ul><li><p><strong>Location</strong>: Sweat glands, salivary glands, and the mammary glands.</p></li><li><p><strong>Function</strong>: Protective tissue.</p></li></ul><p></p>
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Stratified columnar epithelium

  • Location: The male urethra and the ducts of some glands.

  • Function: Secretes and protects.

<ul><li><p><strong>Location</strong>: The male urethra and the ducts of some glands.</p></li><li><p><strong>Function</strong>: Secretes and protects.</p></li></ul><p></p>
8
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Transitional epithelium

  • Location: Lines the bladder, urethra, and the ureters.

  • Function: Allows the urinary organs to expand and stretch.

<ul><li><p><strong>Location</strong>: Lines the bladder, urethra, and the ureters.</p></li><li><p><strong>Function</strong>: Allows the urinary organs to expand and stretch.</p></li></ul><p></p>