Ion Movement and Action Potentials

Question 1

Eion=61/z*log([ion]out/[ion]in)

Answer 1

Nernst equation, for finding equilibrium potential

Question 2

Vm-Eion

Answer 2

Driving Force

Question 3

I=V/R

Answer 3

Current=voltage/resistance

Question 4

I=V*G

Answer 4

Current=voltage*conductance

Question 5

Leak Channels

Answer 5

Always open, let certain ions cross the membrane

Question 6

Gated Channels

Answer 6

Open in response to specific changes

Question 7

Ligand or Chemically Gated Channels

Answer 7

Molecule binds to a binding site and the channel opens

Question 8

Voltage Gated Channels

Answer 8

Responds to changes in membrane potential

Question 9

Mechanically gated channels

Answer 9

Opens in response to touch

Question 10

Vm

Answer 10

Membrane potential