Nerves Flashcards
1
Q
Nerve Impulses
A
weak electrical current, like a wave.
2
Q
The Neuron membrane mantians…
A
resting potential
3
Q
what channel opens up first and what does it do
A
sodium diffuses inward; depolarizes
4
Q
what channel opens second and what does it do
A
potassiumdiffuses outward; repolarizes
5
Q
Depolarization
A
loss of the difference in charge between inside and outside of plasma memebrane of a muscle or nerve cell due to a change in permeability and migration of sodium ions to interior.
6
Q
synapse
A
junction between 2 communicating neurons
