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10 Cards in this Set

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  • Back
An AP always moves in ___________. This is due to the _____________.
one direction, refractory period
__________ wears off over a short distance.
Local response
The length constant depends on the ______ of the membrane and the _________ distance.
Resistance, intracellular
The length constant increases with the __________ of the fibre.
Diameter
There is less damping of __________ in wider fibres.
Local response
Wide fibres conduct _____ than thin fibres.
Faster
The ____________ increases the membrane resistance.
Myelin sheath
What is it called when the action potential jumps from node to node?
Saltatoire conductance
Is the conductance larger for myelinised axons?
Yes
What is the defect for patients with multiple sclerosis?
Myelin breaks down, therefore, the conductance of signals through axons is interrupted.