Two fundamental concepts about the ion channels of a "resting" neuron are that the channels
A. are always open, but the concentration gradients of ions frequently change
B. are always closed, but ions move closer to the channels during excitation
C. are open or closed depending on their type, and are specific as to which ion can traverse them
D. open in response to stimuli, and then close simultaneously, in unison

Question

23-08-2022
Biology

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Two fundamental concepts about the ion channels of a "resting" neuron are that the channels
A. are always open, but the concentration gradients of ions frequently change
B. are always closed, but ions move closer to the channels during excitation
C. are open or closed depending on their type, and are specific as to which ion can traverse them
D. open in response to stimuli, and then close simultaneously, in unison

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cenonjeric3 cenonjeric3 · Answer 1 · 2022-08-29T11:14:06+02:00

C, "are open or closed depending on their type, and are specific as to which ion can traverse them"

Leak channels are those that are always open in resting neurons. Others are shut when neurons are at rest and only open when a signal is received. The channels have a tunnel that runs through the center and span the plasma membrane from one side to the other.

Ion channels enable a neuron get ready to respond to inputs even when it is "resting" awaiting an incoming signal. Ion channels assist in "charge" a neuron with an electric potential in this way. Ion channels rapidly open and close after receiving a signal to send the stimulus up the axon to its intended location. Ion channels restore the basal "resting" conditions after the signal reaches the intended recipient, preparing the neuron for the subsequent event.

Here's another question with an answer similar to this about Ion Channels: https://brainly.com/question/14264684

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