What are the major positive ions situated outside the neuron when it is polarized?
A. magnesium ions
B. sodium ions
C. calcium ions
D. potassium ions

When a neuron is polarized, the major positive ions located outside the neuron are sodium ions (Na+) and calcium ions (Ca2+). These ions contribute to the neuron's resting membrane potential. Potassium ions (K+) are primarily found inside the neuron during this state. ;

Answered by GinnyAnswer | 2025-07-06

The major positive ions situated outside the neuron when it is polarized are sodium ions (Na+) and calcium ions (Ca2+). These ions are crucial for generating action potentials and transmitting signals in the nervous system. Thus, the correct choices for the question are options B and C.
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Answered by Anonymous | 2025-08-13