The type of ion present in higher concentrations inside the plasma membrane of a "resting" neuron is
A)potassium.
B)magnesium.
C)phosphorus.
D)iron.
E)sodium.

Question

Quizplus · Accepted Answer

The higher concentration of ion present inside the plasma membrane of a "resting" neuron is potassium. This creates a concentration gradient that allows potassium ions to move out of the cell through potassium channels, creating a negative resting membrane potential. Sodium ions are typically in higher concentrations outside the cell.

The Type of Ion Present in Higher Concentrations Inside the Plasma