Question 1
Voltage-gated channels are located
◦ in the membranes of dendrites only.
◦ on the neuron cell body only.
◦ within the cytosol only.
◦ in the membranes of axons only.
◦ in the membranes of dendrites, in the membranes of axons, and on the neuron cell body.
Question 2
The sodium-potassium exchange pump
◦ transports sodium ions into the cell during depolarization.
◦ must re-establish ion concentrations after each action potential.
◦ transports potassium ions out of the cell during repolarization.
◦ moves sodium and potassium in down their chemical gradients.
◦ requires ATP to function.