Dr.W is trying to explain the concepts of resting membrane potential, equilibrium potential, and membrane potential...

Dr.W is trying to explain the concepts of resting membrane potential, equilibrium potential, and membrane potential to the students in her laboratory. To do this, she uses a dish of cultured motor neurons so that she can alter the solution covering the cells and she can use a recording electrode to pierce one of the cells and determine its membrane potential relative to the extracellular fluid. She asks you a number of questions before and after she alters the conditions around the cell.

Showing all work, calculate the E_ionfor Na⁺, K⁺and Ca⁺⁺

The normal media (fluid covering the cells) contains:

145 mEq/L Na⁺ 5 mEq/L K⁺ and 2 mEq/L Ca⁺⁺

and the intracellular fluid contains:

15 mEq/L Na⁺ 155 mEq/L K⁺ and 0.0001 mEq/L Ca⁺⁺

Expert Solution

Sydney Mullin answered 2 years ago

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