At resting membrane potential, which ion concentration is high outside the axonal membrane?(a) Sodium ions(b) Calcium ions(c) Potassium ions(d) Chlorine ionsThe question was posed to me in a national level competition.I want to ask this question from Neuron-1 topic in division Neural Control and Coordination of Biology – Class 11

At resting membrane potential, which ion concentration is high outside

1.	At resting membrane potential, which ion concentration is high outside the axonal membrane?(a) Sodium ions(b) Calcium ions(c) Potassium ions(d) Chlorine ionsThe question was posed to me in a national level competition.I want to ask this question from Neuron-1 topic in division Neural Control and Coordination of Biology – Class 11
Answer» RIGHT choice is (a) Sodium ions The EXPLANATION is: At resting membrane potential, the membrane is permeable to POTASSIUM ions but NEARLY impermeable to sodium ions. Hence, the concentration of sodium ions is higher outside the membrane.

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