题目内容

During the absolute refractory period, the excitability of tissues is ()

A. infinity
B. greater than the normal
C. less than the normal
D. equal to the normal
E. zero

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The overshoot value of AP of the neuron is close to ()

A. the sum of K+ equilibrium potential and Na+ equilibrium potential
B. the difference of K+ equilibrium potential and Na+ equilibrium potential
C. K+ equilibrium potential
D. Na+ equilibrium potential
E. the sum of RP and Na+ equilibrium potential

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The depolarizing phase of AP of a neuron is formed by ()

A. deactivation of Na+ channel
B. Na+ influx
C. K+ efflux
D. Ca2+ influx
E. Cl- influx

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The value of the resting potential of a neuron modifies from -90 mV to -100mV. This phenomenon is called as ()

A. Depolarization
B. Hyperpolarization
C. Repolarization
D. Polarization
E. overshoot

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___ has "all or none" phenomenon. ()

A. The postsynaptic potential
B. The end-plate potential
C. The receptor potential
D. The spike potential
E. The generator potential

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During the absolute refractory period, the excitability of tissues is ()

A. infinity B. greater than the normal C. less than the normal D. equal to the normal E. zero

The overshoot value of AP of the neuron is close to ()

The depolarizing phase of AP of a neuron is formed by ()

The value of the resting potential of a neuron modifies from -90 mV to -100mV. This phenomenon is called as ()

___ has "all or none" phenomenon. ()

A. infinity
B. greater than the normal
C. less than the normal
D. equal to the normal
E. zero