Which of these ions are present in higher concentration in the extracellular fluid (ECF), relative to the intracellular fluid (ICF)?
A
Cations
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B
(K+) ions
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C
Anions
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D
(Na+) ions
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Solution
The correct options are A Cations D (Na+) ions The (Na+) ions, which are positively charged ions or cations are present in higher concentration in the ECF, compared to the ICF. Anions and (K+) ions are more concentrated in the ICF, thereby making the neuronal membrane polarized at -70mV.