Question

Action potentials occur when ____________. a. a neuron receives adequate stimulation b. sodium gates open in an ever accelerating way c. sodium-potassium pumps kick into action d. both a and b

Name: Problem 3, Chapter 29: Biology Concepts and Applications
Uploaded: 2021-03-29T16:53:19-08:00
Duration: 1 min 50 s
Channel: Christina Sorrentino
Description: Action potentials occur when . a. a neuron receives adequate stimulation b. sodium gates open in an ever accelerating way c. sodium-potassium pumps kick into action d. both a and b

   Action potentials occur when ____________.
a. a neuron receives adequate stimulation
b. sodium gates open in an ever accelerating way
c. sodium-potassium pumps kick into action
d. both a and b

Biology Concepts and Applications

Cecie Starr 6th Edition

Chapter 29, Problem 3

Instant Answer

Solved by Expert Christina Sorrentino

03/29/2021

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This is the basic mechanism by which neurons send signals to each other or to other types of cells. Show more…

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Action potentials occur when ____________. a. a neuron receives adequate stimulation b. sodium gates open in an ever accelerating way c. sodium-potassium pumps kick into action d. both a and b

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Key Concepts

Voltage-Gated Sodium Channels

These are specialized protein channels in the neuronal membrane that are sensitive to changes in voltage. Upon reaching the threshold, these channels open rapidly, allowing an influx of sodium ions, which causes the rapid depolarization phase of the action potential. This process is pivotal in the initiation and propagation of the electrical signal along the neuron.

Neuronal Threshold

This concept refers to the critical level of membrane depolarization that must be reached for an action potential to be initiated. When a neuron receives adequate stimulation, the membrane potential moves from its resting state towards a specific threshold level, and once this threshold is surpassed, it triggers the generation of an action potential.

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