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Use the following table to answer the questions Ion Extracellular Concentration (mM) Intracellular Concentration (mM) Na+ 440 50 K+ 20 400 Cl- 560 52 Ca++ 10 1 Calculate the equilibrium potential for...

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Question

Medical Sciences

Use the following table to answer thequestions

Ion

Extracellular Concentration (mM)

Intracellular Concentration (mM)

Na+

440

50

K+

20

400

Cl-

560

52

Ca++

10

1

  1. Calculate the equilibrium potential for Na+, K+, Ca++, and Cl-ions? (4 points)
  2. If the resting membrane potential is -65, give the direction ofthe flow of Na+, Ca++, K+, and Cl- ion. (4 points)
  3. What will happen to the Cl- equilibrium potential, if onechanges the extracellular chloride concentration from 560 mM to 100mM? Give the direction of Cl- flow. (2 points)

Answer & Explanation Solved by verified expert
4.3 Ratings (1063 Votes)
AIt can be calculated using the Nernst equation Eeq Na RTzF ln Nao Nai EeqNa is the equilibrium potential for Sodium measured in volts R is the universal gas constant equal to 8314 joulesK1mol1 T is the absolute temperature measured in kelvins K degrees Celsius 27315 For Normal body temperature 37C T 31015K z is the number of elementary charges of the ion in question involved in the reaction F is the    See Answer
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