Origin of membrane potentials Flashcards
1
Q
membrane potential of all cells
A
polarised electrically
2
Q
Em
A
membrane potential; seperation of opposite charges across the membrane
- between thin layers of ECF and iCF located next to the outsude and inside of the memrbane
3
Q
is the membrane itself charged
A
no
4
Q
ability of excitable cells
A
to produce rapid transient changed in their membrane potential when excited
5
Q
excitable cells
A
nerves and muscles
6
Q
resting membrane potential in exciteable v non cells
A
constant in non, excitable cells at rest
7
Q
what is the membrane more permeable to at resting potential
A
K+
8
Q
nernst equation
A
calculates the equilibrium potenital for any given ion
9
Q
movement of k+ alone on em
A
resulting electrical gradient moves k+ into the cell
10
Q
equilibrium potential for na+
A
electrical gradient moves na+ out
11
Q
A
