{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Midterm Solutions 5

# Hence ga g g ea b eb c ec gt gt gt 1 15 25 40

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: dual ions, we use the Nernst equation, which is given by: RT C E = −2.3 log10 i zF Co At 37°C, this equation simplifies as follows: ⎛C ⎞ −60 mV E= log10 ⎜ i ⎟ z ⎝ Co ⎠ For ion A+: ⎛ 50 mEq ⎞ −60 mV EA = log10 ⎜ = −60 mV ⎝ 5 mEq ⎟ ⎠ +1 Similarly, for ion B2+: ⎛ 0.01 mEq ⎞ −60 mV EB = log10 ⎜ = 60 mV ⎝ 1 mEq ⎟ ⎠ +2 B. If the overall membrane potential at steady state is - 40 mV, estimate the value of the equilibrium potential of C- . (10) Solution: To the find the equilibrium potential of C- , we need to use the chord conductance equation: g g g g Em = A EA + B EB + C EC + D ED gT gT gT gT From the table, we know that the equilibrium potential of D- is 0 mV since the intracellular and extracellular co...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online