Lecture 15 Membrane Potentials then Mitochondria

Lecture 15 Membrane Potentials then Mitochondria - Lecture...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 15 Membrane potentials Energy considerations – Nernst equation Action potentials Transmission in myelinated neurons Synaptic transmission Mitochondria Structure
Background image of page 1

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

View Full DocumentRight Arrow Icon
Main Points for Today Differential permeability to ions sets up potential differences across membranes Action Potentials are based on voltage gated channels Each compartment of the mitochondrion carries out specific tasks
Background image of page 2
Membrane Potential – Charge Difference Across a Membrane 0
Background image of page 3

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

View Full DocumentRight Arrow Icon
0 Ion channel permeable to the positive ions
Background image of page 4
0 Influences on Ion Movement K + ions move from high concentration to low Cl - ions left behind; charge differential develops At some point, K + reaches equilibrium - tendency to move with gradient countered by negative charge attraction
Background image of page 5

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

View Full DocumentRight Arrow Icon
Equilibrium Potential Membrane potential is a function of the relative concentrations of ions and the relative permeability of the membrane to those ions. For a single ion, the tendency for that ion to
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/08/2008 for the course BIOL 301 taught by Professor Tepperman during the Winter '08 term at University of Cincinnati.

Page1 / 26

Lecture 15 Membrane Potentials then Mitochondria - Lecture...

This preview shows document pages 1 - 7. Sign up to view the full document.

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