doc179
Forum Guru
Topics: 67
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inactivation of the Na+/K+ pump will cause
a. an increase in the intracellular volume
b.an increase in the intracellular potassium concentration
c. hyperpolarisation of the membrane potential
d.an increase in the excitability of nerve cell
e. an increase in the flow of sodium out of he cell
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| mildus
Forum Guru
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Posts: 614
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a
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| doc179
Forum Guru
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why not C?
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| yasmeen
Forum Guru
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A ITS THE MECH OF REVERSIBLE CELL INJURY DUE TO ATP DEPLETION
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| star1
Forum Guru
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Agree with Yasmeen A
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| marwa
Forum Junior
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what about d :
increase extracellular K+_____K+influx_______depolarization of the cell________ the cell becomes more excitable
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| mildus
Forum Guru
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Posts: 614
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Na+ goes in and K+ goes out, you can't think only of effect of K+ when you know that Na+ also has sth to do there (Na/K ATPase inactivation affects both Na and K); so it's A (Na/K pump is known as the main security factor for intracellular volume maintainance)
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| marwa
Forum Junior
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after i sent my post,i was still thinking about the q, i agree increasing intracellular Na+ will attract more H2O intracellularlly leading to osmotic damage.
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| general malaise
Forum Guru
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A...Na/K pump is necessary to prevent the cell from swelling up
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| Vivian6
Forum Newbie
Topics: 4
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Why not d?
Intracellular Na+ goes up, na+/ca++ exchang goes down, intracellular ca++ goes up, neurotransmitter release goes up----increased excitability of neural cells
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| aim
Forum Junior
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Posts: 45
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IF WE INACTIVATE PUMP Na will remain inside, also there will not be K+ influx
increase in intracellular volume
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| Nan
Forum Senior
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A. Agree with aim
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| Ig F
Forum Elite
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aim.u r making absolute sense.......a is the rite answer,,,
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