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Lecture 2
The Neuron
12
Physiology
Undergraduate 2
02/12/2011
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Term
Schwann cells
 Definition
form myelin sheath in PNS
Term
Oligodendrocytes
 Definition
form myelin sheath in CNS
Term
conductance
 Definition
ease of moving charge across membrane
Term
voltage/potential
 Definition
energy to move a charge
Term
depolarization
 Definition
excitation, cell getting more positive
Term
hyperpolarization
 Definition
cell getting more negative
Term
main ions
 Definition
Na, K, Ca, Cl
Term
normal cell resting potential
 Definition
-70
Term
equilibrium membrane potential for Na
 Definition
60 mV
Term
equilibrium membrane potential for K
 Definition
-90mV
Term
if cell membrane potential is 0 mV
 Definition
cell is dead
Term
membrane potentials are voltage
 Definition
inside cell
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