What is the difference between white matter and gray matter?

Which of the following electrical signal pertains to a signal derived from incoming stimuli into the dendrites?

Axons can transmit outgoing messages along its membrane via:

Which of the following experimental scenarios BEST demonstrates a neuron at rest (at a resting membrane potential)?

A Mammalian Neuron received a stimuli that depolarizes the neuron at -60. when it reached -40, the neuron started to repolarize. What kind of currents can we see during this phenomena?

In bacterial K+ channels, which phenomenon attracts the K+ ion to the selectivity filter?

A neuron is at rest (RMP) at -70. However, a certain stimulation event caused an action potential to happen once the signal reached -60. Now, the voltmeter  is reading at -55, and there are more NA+ ions moving in and less potassium coming out (pNA > pK). The neuron is now at what phase of action potential?

What causes potassium to eventually get released to the inside of the cell in sodium potassium pump?

Most neurons of all organisms tend to have more __________________ in the inside than the outside of the cell.

Glial cells in the CNS that act to remove damaged neurons and or infections are called _____________