In a Neuron at Rest,the Membrane is Most Permeable To

Question

In a neuron at rest,the membrane is most permeable to
A)potassium.
B)sodium.
C)chloride.
D)calcium.
E)magnesium.

Accepted Answer

At rest, the membrane of a neuron is most permeable to potassium ions (K+), which allows for the maintenance of the resting membrane potential. Sodium ions (Na+) and chloride ions (Cl-) are also present, but their permeability is lower than potassium. Calcium ions (Ca2+) and magnesium ions (Mg2+) have very low permeability at rest.