Lecture_4_NOTES

Lecture_4_NOTES - Lecture4 OnlineHandouts: Lec4Notes Review...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 4 Online Handouts: Lec 4 Notes Announcements: Please exit by middle aisles Reading (Recommended): Reading: Ch 4 Review Nernst Potential Membrane Potential Action Potential Conduction of AP REV: Equilibrium Potential Membrane potential at which electrical and chemical concentration forces are in equilibrium Equilibrium Potential for an ion (E i ) Nernst Potential for “ion” E ion = 61 x log (C o / C i ) [units in mV] C = [ion] = Concentration o is ECF, i is ICF Nernst equation E K = 61 x log (5mmol)/(150 mM) = 61 x 1.5 = 90 mV E Na = 61 x log (150mmol)/(15 mM) = 61 x 1 = 61 mV
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
REV: Membrane Potential Membrane potential (E m ) determined by: [Na + ] and [K + ] in ICF and ECF (defines E i ) Na + and K + Ion membrane permeability (P i ) Two types of membrane proteins determine P i Ion selective channels for Na + and K + (Passive) Na/K ATPase Pump (Active) Resting membrane potential (RMP; E m ~ 70mV) P K > P na (~30:1)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/10/2010 for the course BIO NPB taught by Professor Furlow during the Spring '10 term at UC Davis.

Page1 / 10

Lecture_4_NOTES - Lecture4 OnlineHandouts: Lec4Notes Review...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online