Voltage-gated sodium channels are sensitive to changes in the extracellular concentration of
A)potassium ions.
B)proteins.
C)sodium ions.
D)chloride ions.
E)calcium ions.

Question

Quizplus · Accepted Answer

Voltage-gated sodium channels are sensitive to changes in the extracellular concentration of calcium ions, as calcium ions help stabilize the channel in its closed state. Changes in calcium levels can affect the excitability of neurons by altering the threshold for channel activation.

Voltage-Gated Sodium Channels Are Sensitive to Changes in the Extracellular