If the membrane potential at the axon hillock becomes subthreshold, an action potential will be fired.   True  or false

Correctly label the following parts of a myelinated axon. CNS PNS Oligodendrocyte Schwann cell Myelin Nerve fiber Dendrite Reset Zoom Is this from the CNS or the PNS?

which way does the neurotransmitter NO move

a channel can be gated mechanically, voltage or by a ligand. When you hear a sound all three of these type channels are being utilized. Explain generally where/how each of these channels are being utilized starting from hearing the sound, through travelling down a nerve to transmission to another nerve.