Which of the following describes the ion channels of a resting neuron?
A) The channels are always open, but the concentration gradients of ions frequently change.
B) The channels are always closed, but ions move closer to the channels during excitation.
C) The channels are open or closed depending on their type, and are specific as to which ion can traverse them.
D) The channels are open in response to stimuli, and then they close simultaneously.

Question

Quizplus · Accepted Answer

Ion channels in a resting neuron are either open or closed depending on their type, and they are specific to which ions can pass through them. This specificity and the variable state of the channels are crucial for maintaining the resting membrane potential and for the initiation and propagation of action potentials.

Which of the Following Describes the Ion Channels of a Resting