Electrical Signals and Neural Pathways

Question 1

Leak Channels

Answer 1

Always open.

Question 2

Gated Channels

Answer 2

Closed until opened by specific signals.

Question 3

Chemically Gated Channels

Answer 3

Opened by specific chemicals.

Question 4

Voltage-Gated Channels

Answer 4

Opened by a change in the electrical property of the cell membrane.

Question 5

Resting Membrane Potential

Answer 5

Unstimulated or resting cell.

Question 6

Action Potential

Answer 6

A rapid electrical signal that travels along the axon.

Question 7

Depolarization

Answer 7

The process during an action potential when the cell becomes less negative.

Question 8

Repolarization

Answer 8

The return of the cell to its resting state after depolarization.

Question 9

Converging Pathway

Answer 9

Two or more neurons synapse with the same postsynaptic neuron.

Question 10

Diverging Pathway

Answer 10

The axon from one neuron divides and synapses with more than one other postsynaptic neuron.

Question 11

Spatial Summation

Answer 11

Local potentials originate from different locations on the postsynaptic neuron.

Question 12

Temporal Summation

Answer 12

Local potentials overlap in time.