f06TissuehandoutREV

f06TissuehandoutREV - Bio 110 Primary Tissues 1 Tissue...

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REV1006 Bio 110: Primary Tissues 1º Tissue Functions Structure Types Drawings; Notes Epithelial Covers outside of the body; lines organs and cavities inside of body; acts as a barrier, protection against injury, invasion and fluid loss; sensory and secretion Free surface (= layer of cells exposed to air or fluid) attached to a basement membrane (extracellular matrix, not a lipid bilayer ); cells are tightly packed 1. Simple squamous: lines blood vessels, lungs; thin and leaky; single layer. 2. Simple cuboidal: kidney tubules, glands (thyroid, salivary); specialized for secretion due to large amounts of cytoplasm and surface area; single layer. 3. Simple columnar: intestinal lining; absorbs nutrients, secretes enzymes; single layer. 4. Stratified squamous: several layers of cells attached to basement membrane; found in area of high impact/abrasion (skin); cells are easily sloughed off and replaced from layers below. Connective
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f06TissuehandoutREV - Bio 110 Primary Tissues 1 Tissue...

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