Mammalian Cell Biology, Human Anatomy and Physiology · Nervous System · 2 marks · Multiple choice
At rest, extracellular voltage relative to the inside of a mammalian cell is ______. Intracellular and extracellular regions have higher ______ and ______ concentrations, respectively.
The resting cell interior is negative relative to outside, so the outside is more positive. Potassium concentration is higher intracellularly and sodium higher extracellularly. The complete combination is A. These concentration gradients underlie the membrane equilibrium potentials.
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