Epithelial - 1. Pseudostratified Ciliated Columnar-one...

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Epithelial Tissue basic role: to provide a boundary layer between the internal A. Characteristics main functions: barrier, absorption, secretion & protection very little matrix avascular always exposed to a “free surface” A. Classification based on two criteria: 1. # of cell layers single layer = simple, multiple layers = stratified 2. cell shape squamous, cuboidal & columnar
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1. Simple squamous -single layer of flat/scale-like cells Functions : secretion, absorption, diffusion Find : blood vessels, alveoli, kidney, intestine Superficial view Cross-section
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1. Simple Cuboidal -single layer of cube shaped cells Functions: secretion, absorption, some protection Find: kidney, ovary
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1. Simple Columnar -single layer of columnar cells -nuclei in row at base of cell -modifications a. cilia b. goblet cells Functions: secretion, absorption, some protection Find: stomach, intestine
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Unformatted text preview: 1. Pseudostratified Ciliated Columnar-one layer of ciliated columnar smooshed together-tons of goblet cells-tons of cilia Function: secretion, filter Find: respiratory structures A. Stratified Epithelium-many layers-name according to cell shape at surface 1. Stratified Squamous-many layers of cells, flat at surface Functions: protection Find: oral cavity, pharynx, esophagus, anus, vagina & skin 1. Stratified Cuboidal-layers of cube-shaped cells-pretty rare, only found in ducts of sweat glands and mammary glands Function: Secretion 1. Transitional-many layers, cells at surface are round-may contain 2 nuclei Function: permits expansion & recoil Find: bladder, urethra Histology defn: the study of tissue tissue: a group of cells working together Two things that help hold cells together to form a tissue: 1. Matrix 2. Cell Junction...
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This note was uploaded on 05/27/2011 for the course BIO 180 taught by Professor Sarahbales during the Spring '11 term at Moraine Valley Community College.

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Epithelial - 1. Pseudostratified Ciliated Columnar-one...

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