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The action potential changes the membrane potential from ______mV (resting) to ____mV and back again to the resting membrane potential?
Na+, k+, and voltage-gated
A change in membrane permeability first to ___then to ___due to the opening of what type of ion channel?
Dendrites and cell body
What areas of the neuron generate signals that open these voltage-gated channels?
Threshold, action potential
If the membrane reaches the trigger point, known as _____what electrical potential will be generated?
Inactivtion of voltage-gated Na+ channels and Opening of voltage-gated K+ channels
What are the two processes that stop the potential from rising above +30 mV?
N+, absolute refractory
After an action potential, the neuron cannot generate another action potential because____channels are inactive. This period is called the ____period?
Relative refractory, more
During the ___period, the cell can generate another action potential but only if the membrane is____(more or less) depolarized.
Increased diameter and pressure of mylein
Conduction velocity along the axon is increased by what two characteristics?
Name the disease whose symptoms include loss of vision and increasing muscle weakness?
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