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14 Cards in this Set
- Front
- Back
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glycocalyx
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carbohydrate-rich, sticky, fuzzy surface of cell
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three types of membrane junctions
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tongue and groove fashion, tight junctions, glycocalyx
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function of tight junction
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prevent anything from passing through extracellular space
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function of desmosomes
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specialize in cell to cell adhesion
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how tight junctions connect
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proteins fuse together to make a zipper
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function of gap junction
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allows free movement of molecules and ions through cell
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keratin filaments
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contain plaques on inside of plasma membrane, keratin filaments outside (guywires)
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what do microvilli contain
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actin, that allows for elasticity
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function of microvilli
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increase surface area of cell in order to allow for more absorption
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integral proteins
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firmly inserted in lipid bilayer; transmembrane proteins
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peripheral proteins
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not embedded in lipid bilayer; usu attached to integral protein
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what is a characteristic of a healthy cell?
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selective permeability
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interstitial fluid
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extracellular fluid derived from blood that contains many substances
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concentration gradient of diffusion
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high to low, down the gradient
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