Question

Why does membrane of neuron polarised? NCERT line​

Answer 1

Answer:

Because of the electrical difference across the cell membrane, the cell membrane of the neuron is polarized.

Answer 2

Answer:

The neuron is polarised due to the presence of numerous channels, pumps, and junctions that maintain distinct ionic concentrations on the inner and outer sides of the neuron. The principal ions involved are Cl, Na, and K, and this difference in ionic concentration keeps the neuron polarised.

Explanation:

• The concentration of $K^+$ ions is higher inside the axoplasm during resting conditions, while the concentration of $Na^+$ ions is higher outside the axoplasm.
• As a result, potassium ions go faster from the inside to the outside than sodium ions. As a result, the membrane develops a positive charge on the outside and a negative charge on the inside.
• This is referred to as membrane polarisation or polarised nerve.