L6 Electro chem and Gradients Flashcards
what type environment is the nervous system? which salts?
fluid, with different concentration, Na, Cl, and K
what is the membrane potential? resting potential?
the difference in voltage (potential) between the inside and outside of the cell, resting potential (nothing happening) is very negative
which direction is current? when is + and -?
inside cell to outside cell
+ is inside to out
- is outside to in
out of the three salts, which ones are in higher concentrations OUTSIDE of the cell?
Na and K
electrical force
ions attract and repel
chemical force
ions go from high concentration to low
equilibrium potential
potential across membrane where the two forces are equal
on the circle diagram, how to know where E arrow goes?
opposites attract, sames repel
on the circle diagram, how to know where C arrow goes?
to even out the concentrations by going from high to low [ ]
