Please choose the one BEST response for each.
-neuron membrane potential at which gated sodium channels open

A)cells that nurture and support neurons
B)sensory neuron
C)interneuron
D)acetylcholine or GABA
E)motor neuron
F)a type of active transporter
G)fills the butterfly-shaped interior of a spinal cord
H)membrane potential
I)resting membrane potential
J)cytoplasmic extension of neurons that convert chemical signals to electrical signals
K)action potential
L)positive feedback
M)threshold potential
N)provides information about a person's level of wakefulness through voltage fluctuations in the cerebral cortex
O)cluster of cell bodies that serves as simple central nervous system in planarians