NURS 5315: ADV PATHO EXAM 1 ACTUAL 2026
QUESTIONS AND VERIFIED ANSWERS
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Terms in this set (213)
Steps of the Action Potential Depolarization
Repolarization
Hyperpolarization
Depolarization movement of the intracellular charge towards
zero (more positive charge)
Voltage gated Na channels open and allow Na to
enter the cell -> voltage inside the cell moves
towards zero
Repolarization Once the intracellular charge reaches zero, the
negative polarity of the inside of the cell is
restored back to its baseline of -70 to -85 mV
-Na channels close, K channels open
,Hyperpolarization when the cell's resting membrane potential is
greater than -85mV. Is less excitable, because
there is a greater distance between the resting
membrane potential and the threshold potential.
In order for the action potential to t has to depolarize by 15-20 mV (threshold
be sucessful potential) to reach -55 to -65 mV.
An alteration in action potential neurologic diseases, muscle disease or
may result from electrolyte imbalances.
What is the main protein Na+-K+ ATPase
responsible for maintaining the
correct balance of extracellular Na
and intracellular K, which is needed
for cellular excitation and
membrane conductivity.
Resting membrane potential when the cell is in a nonexcited state and is at -70
to -85 mV.
Refractory Period is a period of time during most of the action
potential which the cell membrane resists
stimulation and it cannot depolarize
Absolute refractory period occurs when the membrane will not respond to
ANY stimulus no matter how strong.
Relative Refractory Period occurs when the membrane is repolarizing and
will only respond to a very strong stimulus.
Hyperpolarized when the cell's resting membrane potential is
greater than -85mV.
Is less excitable, because there is a greater
distance between the resting membrane
potential and the threshold potential.
, Hypopolarized when the cell's resting membrane potential is
closer to zero, for instance it is -65mV.
Is more excitable because the resting membrane
potential is closer to the threshold potential,
there is less distance between them.
Action potential altered by (serum outside of cell is low)
hypokalemia -Hyperpolarized (cell becomes more negative,
ex: -100)
-Affects the resting membrane potential of cells
-The cell is less likely to depolarize and transmit
impulses
Can cause a decrease in neuromuscular
excitability and leads to weakness, smooth
muscle atony, paresthesias, and cardiac
dysrhythmias
QUESTIONS AND VERIFIED ANSWERS
Save
Terms in this set (213)
Steps of the Action Potential Depolarization
Repolarization
Hyperpolarization
Depolarization movement of the intracellular charge towards
zero (more positive charge)
Voltage gated Na channels open and allow Na to
enter the cell -> voltage inside the cell moves
towards zero
Repolarization Once the intracellular charge reaches zero, the
negative polarity of the inside of the cell is
restored back to its baseline of -70 to -85 mV
-Na channels close, K channels open
,Hyperpolarization when the cell's resting membrane potential is
greater than -85mV. Is less excitable, because
there is a greater distance between the resting
membrane potential and the threshold potential.
In order for the action potential to t has to depolarize by 15-20 mV (threshold
be sucessful potential) to reach -55 to -65 mV.
An alteration in action potential neurologic diseases, muscle disease or
may result from electrolyte imbalances.
What is the main protein Na+-K+ ATPase
responsible for maintaining the
correct balance of extracellular Na
and intracellular K, which is needed
for cellular excitation and
membrane conductivity.
Resting membrane potential when the cell is in a nonexcited state and is at -70
to -85 mV.
Refractory Period is a period of time during most of the action
potential which the cell membrane resists
stimulation and it cannot depolarize
Absolute refractory period occurs when the membrane will not respond to
ANY stimulus no matter how strong.
Relative Refractory Period occurs when the membrane is repolarizing and
will only respond to a very strong stimulus.
Hyperpolarized when the cell's resting membrane potential is
greater than -85mV.
Is less excitable, because there is a greater
distance between the resting membrane
potential and the threshold potential.
, Hypopolarized when the cell's resting membrane potential is
closer to zero, for instance it is -65mV.
Is more excitable because the resting membrane
potential is closer to the threshold potential,
there is less distance between them.
Action potential altered by (serum outside of cell is low)
hypokalemia -Hyperpolarized (cell becomes more negative,
ex: -100)
-Affects the resting membrane potential of cells
-The cell is less likely to depolarize and transmit
impulses
Can cause a decrease in neuromuscular
excitability and leads to weakness, smooth
muscle atony, paresthesias, and cardiac
dysrhythmias
