Action Potentials: Unveiling the Mystery of Unidirectional Transmissio

Chapter 37, Problem 4

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QUESTION:

Why are action potentials usually conducted in one direction?

a. The nodes of Ranvier conduct potentials in one direction.

b. The brief refractory period prevents reopening of voltage-gated \(\mathrm{Na}^{+}\) channels.

c. The axon hillock has a higher membrane potential than the terminals of the axon.

d. Ions can flow along the axon in only one direction.

e. Voltage-gated channels for both \(\mathrm{Na}^{+}\) and \(\mathrm{K}^{+}\) open in only one direction.

Questions & Answers

QUESTION:

Why are action potentials usually conducted in one direction?

a. The nodes of Ranvier conduct potentials in one direction.

b. The brief refractory period prevents reopening of voltage-gated \(\mathrm{Na}^{+}\) channels.

c. The axon hillock has a higher membrane potential than the terminals of the axon.

d. Ions can flow along the axon in only one direction.

e. Voltage-gated channels for both \(\mathrm{Na}^{+}\) and \(\mathrm{K}^{+}\) open in only one direction.

ANSWER:

Step 1 of 3

The change in membrane voltage due to the sufficient shifting of potential of membrane by depolarization is called action potential. Action potentials generally conduct unidirectionally.

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Action Potentials: Unveiling the Mystery of Unidirectional Transmissio
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Discover the intricacies of action potentials in the nervous system. Unpack five statements on why they move in one direction, spotlighting the role of the refractory period. Grasp the significance of voltage-gated channels and ion flow in neural communication.


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