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Saltatory and Non-Saltatory Conduction

Very short an...

Question

Very short answer type.
An action potential consists of depolarization and repolarization. Which are the channels open during depolarization and during repolarization?

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Solution

Voltage-gated $N a^{+}$ channels are open during depolarization and voltage-gated $K^{+}$ channels are open during repolarization.

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Similar questions

Q. What is the difference between repolarization depolarization and hyperpolarizing

Q. Match the following stages of action potential to its corresponding state of ion movement

I. Depolarization stage (p). (K⁺) ions move outside the cell
II. Repolarization stage (q). (Na⁺) ions move inside the cell
III. Hyperpolarization stage (r). No net ion movement
IV. Resting stage (s). (K⁺) ions move into the cell
V. Threshold potential (t). Ligand gated sodium channels open
VI. Stimulus reaches the neuron (u). Voltage gated sodium channels open

Q. Which of these processes occurs during repolarization of nerve fibre?
(i) Open Na

^{+}

channel
(ii) Closed Na

^{+}

channel
(iii) Closed K

^{+}

channel
(iv) Open K

^{+}

Q. Match the following column I and column II:

\begin{matrix} Column I & Column II A. Resting potential & i. Na ions are more on the inside of the membrane at the site B. Depolarization & ii. Potassium channels gets opened C. Repolarization & iii. More K ions inside of the cell and more Na ions outside of the cell \end{matrix}

Q. Choose the correct feature for the events with respect to a neuron: Event Feature

A.	Repolarization	I.	Electrochemical equilibrium at -70 mV
B.	Resting potential	II.	Influx of ${Na}^{+}$ ions
C.	Hyperpolarization	III.	Voltage gated $K^{+}$ channel opens
D.	Depolarization	IV.	Membrane potential going beyond -70 mV

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Saltatory and Non-Saltatory Conduction

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