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16 Cards in this Set
- Front
- Back
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Desmosomes |
-bind non touching cells - have plaque - found in stretching tissue - heart, skin, uterus |
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Gap Junctions |
- connexons - send signals abundant in cardiac and smooth muscle |
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tight junctions |
- seal off pathways - stomach lining |
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Two factors of permability |
size of molecule solubility (water/fat) |
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Concentration gradient |
high to low |
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Electrochemical gradient |
passage of + and - ions |
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Pressure gradient |
passage of gases |
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Properities of permable molecules with lipid bilayer |
1. fat soluble 2. size 3. nonpolar(uncharged) - CO2 O2 4. polar particles - Na, K 5. poor lipid soluable - glucose 6. different channels/ carriers |
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Diffusion |
high to low, unassisted - CO2 and O2 |
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electrochemical diffusion |
both electrical and concentration gradient - 1. high to low con. 2. + move to - |
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Facilitated Diffusion |
glucose carrier transport moves polar molecules - flip flop fashion Passive transport |
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Osmosis |
movement of water from low to high |
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Osmotic pressure |
created by solute |
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Hydrostatic pressure |
created by water |
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Carrier mediated transport |
form of active transport use of carrier which performs flip flop |
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active transport |
move from low to high require carrier |
