Membrane Potentials Flashcards
1
Q
What is the language of the NS
A
electrical signals
2
Q
True or False; neurons and muscles are specialized to use rapid changes in their electrical properties for signaling
A
true
3
Q
The phospholipid bilayer acts as what?
A
has a high electrical resistance and acts as a capacitor
4
Q
What is Ohms law
A
V=I x R
v= milliV along the membrane
I= ions crossing
R= ions channels open/close
5
Q
When do membrane potentials change?
A
oly when current flow across the membrane (no open ion channels = no change)
6
Q
What is needed to establish a membrane potential
A
a very thin shell of a charge difference
7
Q
The concentration (chemical) difference of an ion across the plasma membrane incluence what?
A
its net flux
8
Q
The electrical charge across the plasma membrane incluences what?
A
net flux of charge ions
