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WorksheetsMembrane potential in excitable cells during the resting state
Total questions: 10
Worksheet time: 5mins
What is the resting membrane potential?
The outside of the cell membrane tends to be more positive than inside
The energy cells accumulate when you sleep
The inside of the cell membrane tends to be more negative than the outside
What is the resting potential in excitable cells?
-45mV to 75 mV
-37mV to -70 mV
-50mV to -85mV
What is one factor that determines the resting membrane potential?
The differences of the intracellular and extracellular fluid's ion concentration
The differences of the intracellular and extracellular fluid's anion concentration
The differences of the intracellular and extracellular fluid's cation concentration
________ increases the resting potential (makes it more negative) and hyperpolarizes the cell.
hyperkalemia
hypokalemia
hyponatremia
hyperemia
Hypokalemia...
increases the resting potential (makes it more negative) and initially hyperpolarizes the cell
decreases the resting potential (makes it less negative) and initially makes the cell hyperexcitable
decreases the resting potential (makes it less negative) and initially hyperpolarizes the cell
increases the resting potential (makes it less negative) and initially makes the cell hyperexcitable
A factor that affects the resting state potential.
temperature of the cell membrane
permeability of the cell membrane to the ions.
presence of certain proteins and lipids.
What would happen to the resting membrane potential of an excitable cell if the Na +/ K+ Atpase pump was inhibited?
Cellular polarization
Cell is unaffected
Cellular depolarization
An effect of alterations of the Na+/K+ pumps
Corneal erosion
Corneal abrasion
Cataract
Another factor that determines the resting membrane potential
Relative permeabilities of the apical layer
Relative permeabilities of the plasma membrane
Relative permeabilities of the basal layer
Resting potential rate in non-excitable cells
-10mV to -15mV
-5mV to -10mV
-4mV to -9mV
