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16 Cards in this Set
- Front
- Back
Current
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movement of net positive charges from an anode (+) to cathode (-)
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Potassium (K) concentration
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inside cells 125, outside cells 5
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Sodium concentration (Na)
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inside cells 10, outside cells 122
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Chloride (Cl) concentration
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inside cells 5, outside 125
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Calcium concentration
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inside 0.0001, outside 2
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Large anions concentration
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inside 130, outside 0
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Cation
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positively charged particle (accumulates on the negative pole or cathode of a battery)
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Anion
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negatively charged particle (accumulates on positive or anode of a battery)
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Capacitor
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two conducting materials separated by an insulating material, capacitance measured in farads
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Which ion can flow across resting membrane
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K
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Equilibrium potential for K
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-80 mV
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Equilibrium potential for Na
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60 mV
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Equilibrium potential for Ca
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120 mV
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What is voltage and how is it generated and measured?
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voltage is the difference in charge between anode and cathode, also called the force exerted on a charged particle, measured in volts.
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Na/K ATPase
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large membrane spanning protein wiht binding sites for Na, K, ATP, extrudes 3 Na + ions for every 2K+ ions it pumps inside the cell
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2 mechanisms of Na channel inactivation
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ball and chain and c type inactivation
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