CCT Exam- Electrophysiology Section with all Correct &
100% Verified Answers |Guaranteed to Pass
During this phase sodium moves rapidly into the cell and potassium begins to exit, converting the
electrical forces within the cell to a positive charge. This phase is called: ✔Correct Answer-Phase 0
A condition in which ions of opposite charges are separated by a semipermeable membrane such as
a cell membrane is called ✔Correct Answer-polarization
Movement of the trans-membrane potential away from + mV values and toward the resting potential
is called ✔Correct Answer-repolarization
The difference measured about -90 mV across the cell membrane is called ✔Correct Answer-
repolarization
A conducted change in the transmembrane potential of excitable cells, initiated by a change in the
membrane permeability to sodium ions is called the ✔Correct Answer-action potential
Which phase of the action potential curve represents the resting phase? ✔Correct Answer-Phase 4
A change in the transmembrane potential that moves it from a negative value towards 0 mV is called
✔Correct Answer-depolarization
A brief rapid change toward the re-polarization process, during which the membrane potential
returns to 0 mV is called ✔Correct Answer-Phase 1
A plateau, or stabilization period, caused by the slow influx of sodium and the slow exit of potassium
is called ✔Correct Answer-Phase 2
This phase is depicted by an upstroke of the action potential curve and is called ✔Correct Answer-
Phase 0
The period between the initiation of an action potential and the restoration of the normal resting
potential is ✔Correct Answer-refractory period
The phase that represents a sudden acceleration of re-polarization as potassium leaves rapidly,
causing the inside of the cell to move toward a more negative state is called ✔Correct Answer-
Phase 3
100% Verified Answers |Guaranteed to Pass
During this phase sodium moves rapidly into the cell and potassium begins to exit, converting the
electrical forces within the cell to a positive charge. This phase is called: ✔Correct Answer-Phase 0
A condition in which ions of opposite charges are separated by a semipermeable membrane such as
a cell membrane is called ✔Correct Answer-polarization
Movement of the trans-membrane potential away from + mV values and toward the resting potential
is called ✔Correct Answer-repolarization
The difference measured about -90 mV across the cell membrane is called ✔Correct Answer-
repolarization
A conducted change in the transmembrane potential of excitable cells, initiated by a change in the
membrane permeability to sodium ions is called the ✔Correct Answer-action potential
Which phase of the action potential curve represents the resting phase? ✔Correct Answer-Phase 4
A change in the transmembrane potential that moves it from a negative value towards 0 mV is called
✔Correct Answer-depolarization
A brief rapid change toward the re-polarization process, during which the membrane potential
returns to 0 mV is called ✔Correct Answer-Phase 1
A plateau, or stabilization period, caused by the slow influx of sodium and the slow exit of potassium
is called ✔Correct Answer-Phase 2
This phase is depicted by an upstroke of the action potential curve and is called ✔Correct Answer-
Phase 0
The period between the initiation of an action potential and the restoration of the normal resting
potential is ✔Correct Answer-refractory period
The phase that represents a sudden acceleration of re-polarization as potassium leaves rapidly,
causing the inside of the cell to move toward a more negative state is called ✔Correct Answer-
Phase 3
