Pacemaker potential

Yes or No

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About this activity

True/false statements about Na+ and pacemaker potentials.

Created by

pptnalini Y C

India

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Pacemaker potentialOnline version True/false statements about Na+ and pacemaker potentials. by pptnalini Y C 1 Depolarization brings the membrane potential closer to the threshold, facilitating action potential generation. Yes No 2 Sodium ion influx depolarizes the membrane toward 0 mV during the rising phase. Yes No 3 The resting membrane potential is commonly around -70 mV in many neurons. Yes No 4 Phase 0 is caused by chloride ion influx through chloride channels. Yes No 5 Sodium channels activate after the cell has repolarized and returned to resting potential. Yes No 6 In a typical neuron, Phase 0 (rapid depolarization) is caused by Na+ influx through voltage-gated sodium channels. Yes No 7 Action potentials can occur without any movement of ions across the membrane. Yes No 8 After the peak of an action potential, Na+ channels inactivate and K+ channels open to promote repolarization. Yes No 9 The peak of the action potential occurs when potassium ions flood into the cell to hyperpolarize it. Yes No 10 The resting membrane potential is exactly 0 mV in neurons. Yes No

Pacemaker potentialOnline version

True/false statements about Na+ and pacemaker potentials.

by pptnalini Y C

Depolarization brings the membrane potential closer to the threshold, facilitating action potential generation.

Yes

Sodium ion influx depolarizes the membrane toward 0 mV during the rising phase.

Yes

The resting membrane potential is commonly around -70 mV in many neurons.

Yes

Phase 0 is caused by chloride ion influx through chloride channels.

Yes

Sodium channels activate after the cell has repolarized and returned to resting potential.

Yes

In a typical neuron, Phase 0 (rapid depolarization) is caused by Na+ influx through voltage-gated sodium channels.

Yes

Action potentials can occur without any movement of ions across the membrane.

Yes

After the peak of an action potential, Na+ channels inactivate and K+ channels open to promote repolarization.

Yes

The peak of the action potential occurs when potassium ions flood into the cell to hyperpolarize it.

Yes

The resting membrane potential is exactly 0 mV in neurons.

Yes

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Pacemaker potential

Yes or No

About this activity

Created by

Download the paper version to play

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Yes or No

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Pacemaker potentialOnline version

by pptnalini Y C

Depolarization brings the membrane potential closer to the threshold, facilitating action potential generation.

Sodium ion influx depolarizes the membrane toward 0 mV during the rising phase.

The resting membrane potential is commonly around -70 mV in many neurons.

Phase 0 is caused by chloride ion influx through chloride channels.

Sodium channels activate after the cell has repolarized and returned to resting potential.

In a typical neuron, Phase 0 (rapid depolarization) is caused by Na+ influx through voltage-gated sodium channels.

Action potentials can occur without any movement of ions across the membrane.

After the peak of an action potential, Na+ channels inactivate and K+ channels open to promote repolarization.

The peak of the action potential occurs when potassium ions flood into the cell to hyperpolarize it.

The resting membrane potential is exactly 0 mV in neurons.

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