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15 Cards in this Set
- Front
- Back
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Four types of tissues
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Epithelial, Connective, Muscle, Nerve
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Epithelial Tissue:
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Cover, protec, lines, forms glands, secretion absorption
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Connective:
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Protects, supports, binds, stores (E, H2O, minerals etc..)
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Muscle:
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Mvt, contract.
Ex: In digestion |
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Nerve:
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Carries impulse-action potential-transmits info, maintains homeostasis
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All tissues develop what?
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Germ Layers!
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The first "tissue" in embryo
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Germ Layers
Ex: Ecto, meso, and endo DERMS=Germ layer |
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Come from all layers
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Epithelial Tissue
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From Ectoderm (Outside)
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Nervous Tissue
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From Mesoderm (middle Layer)
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Muscle and Connective
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Tight Junctions:
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Prevent leakage, fuse plasma membrandes together and transmembrane proteins; Found in lining of the Stomach, urinary Bladder
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Adherens Junctions:
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Cell to cell or cell to basement membrane or extracellular material such as plaque. Hold together by DADHERINS (glycoprotein) "hooks into plaque inside memb. Guard against friction or stretch
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Desmonsomes:
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"Spot weld" with cadherins and plaques w/intermediate filamet called Keratin for support; Heart
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Hemidesmosomes:
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Link to laminin in basement membrane; do not link to cells. Integrin=Glycoprotein!
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Gap Junctions:
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Connexons-proteins-tunnels for passage. Glucose ions, Info; Smooth muscles
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