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

Question

Quizplus · Accepted Answer

The threshold potential is the neuron membrane potential at which gated sodium channels open, leading to an action potential.

Answer: D
 Acetylcholine and GABA are both neurotransmitters, which are chemical messengers used by neurons to communicate with each other.

Answer: E
 Motor neurons transmit signals from the central nervous system to muscles or glands to elicit a response.

Answer: J
 Dendrites are the cytoplasmic extensions of neurons that receive chemical signals and convert them into electrical signals that can be transmitted to the cell body and axon.

Answer: I
 The resting membrane potential is the membrane potential of a neuron in its inactive state, when it is not transmitting any signals.

Answer: O
 Planarians are flatworms that have a decentralized nervous system consisting of a nerve net, ganglia, and a primitive brain made up of a cluster of cell bodies.

Please Choose the One BEST Response for Each