channels (gates) on neurons that allow ions to flow through them are called voltage-gated because they open and close in response to changing voltages inside the cell membrane. During an action potential, at some point the Na+ gates are open. At what voltage do all of these gates close, thereby stopping the depolarization process at that point on the membrane? Multiple Choice 0 mV -35 mV -55 mV 120 volts -70 mV
Added by Heather D.
Close
Step 1
Channels on neurons that allow ions to flow through are called voltage-gated channels. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 81 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Sri K.
Nervous System Activity: How Neurons Work - Conduction of an Action Potential Action potential is conducted "downstream" as the next sodium channels open. Action potential begins as sodium channels open here. Sodium ions spread from their point of entry. Resting potential is restored here as sodium channels close and potassium channels open. Axon
Madhur L.
A neuron has reached a threshold potential when it has depolarized to the point where a. the voltage-gated $\mathrm{Na}^{+}$ channels have become inactivated. b. sufficient numbers of voltage-gated Na $^{+}$ channels open to initiate a positive feedback cycle, contributing to further depolarization. c. voltage-gated $\mathrm{K}^{+}$ channels close. d. voltage-gated $\mathrm{Na}^{+}$ channels close. e. both $b$ and $c$ occur.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD