Flashcards in Qs Deck (15):
T/F: A patch is smaller than an axon segment and has a uniform potential.
The amplitude and rate of rise of the action potential are highly dependent on the external concentration of what ion?
Which property of the membrane allows it to hold an enormous electrical charge?
One can calculate the expected rate of change of membrane voltage from a current pulse using what equation?
Equation for Capacitive Current
The resting membrane potential (Vm) comes about through the actions of what?
What ions are simultaneously pumped into the cell?
What ions are simultaneously pumped out of the cell?
T/F: "Leak channels cause an increase in the resting membrane potential.
Equilibrium potentials are calculated from what equation?
T/F: The equilibrium potential and the membrane potential are equal only under one special circumstance.
If a cell is only permeable to K ions, then what is the value of Vm?
If a cell is only permeable to Na ions, then what is the value of Vm?
T/F: If the ion concentrations do not change, then ENa and EK do not change.
Many glial cells are only permeable to what ions?