KROK 1 2019 – Question 100 · KROK (Medicine) · Physiology
KCl concentration in a solution that surrounds an isolated cell was increased. How will resting membrane potential (RMP) and cell excitability change in this case?
- A. RMP decreases, excitability increases
- B. RMP and excitability remain unchanged
- C. RMP decreases, excitability remains unchanged
- D. RMP increases, excitability increases
- E. RMP increases, excitability decreases
Hint
Think about how the K+ gradient across the membrane determines the resting potential, and how the gap between resting potential and threshold relates to excitability.
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