Question

explain the polarisation of the membrane of a nerve fibre

Answer 1

polarisation of the membrane of a nerve fibre nerve fibres become excited to a stimulus and conduc the stimulus for the required and the appropriate response in conducting a stimulus it has to pass through from resting phase to the active face and then recovery face

investing face the membrane is 30 times more permeable to potassium ions then the sodium ions as a result of which inside the exam there is more K + and like was more in Na + on outside of the membrane
inner side of polarized membrane is electronegative while the outer side is electropositive




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Answer 2

Answer

• (a) Polarisation of the membrane of a nerve fibre

During resting condition, the concentration of K+ ions is more inside the axoplasm while the concentration of Na+ ions is more outside the axoplasm. As a result, the potassium ions move faster from inside to outside as compared to sodium ions. Therefore, the membrane becomes positively charged outside and negatively charged inside. This is known as polarization of membrane or polarized nerve.