31 - VertPhysNotes8/31 21:48:00 &lifiers&oscilloscope o...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Vert Phys Notes 8/31 31/08/2010 21:48:00 Nerve cell  Record voltage difference across membrane o Voltage is a relative measurement 2 electrodes in the same concentration, same everything o potential = 0 o as soon as the electrode penetrates the cell, equals negative  immediately and stays at that value this is the cell’s resting potential (every cell has one) o Electrode neutrality in 2 compartments with equal concentrations  (both) No voltage difference (IF ELECTRO-NEUTRAL) o Do ions move freely? Both move by brawnian motion No net movement, random What about 2 diff concentrations? o Both diffuse down conc. Gradient towards equilibrium What about a semi-permeable membrane? (ex: only k+) o See a voltage because of charge separation o See a build up of pos. charge, contributes to neg. on other side (in the 
Background image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '10
  • Pollak/Zakon
  • Ion, stable equilibrium potential, Record voltage difference, Vert Phys Notes, Work =RT ln, electrical potential btwn

{[ snackBarMessage ]}

Page1 / 4

31 - VertPhysNotes8/31 21:48:00 &lifiers&oscilloscope o...

This preview shows document pages 1 - 2. Sign up to view the full document.

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