The action potential begins when sodium channels open and sodium enters the neuron.
nope!
The structures directly involved in generating an action potential are the axon membrane, voltage-gated ion channels, and ions such as sodium and potassium. Myelin helps speed conduction but does not create the action potential itself.
incorrect
The correct order is: resting potential, threshold is reached, sodium channels open, depolarization occurs, potassium channels open, repolarization occurs, and the membrane returns to resting potential..
WRONG!
The myelin sheath increases the speed of nerve impulses by allowing signals to jump between nodes of Ranvier. This process is called saltatory conduction.
incorrect!
Repolarization mainly occurs when potassium ions leave the neuron, making the inside of the cell negative again after depolarization.
incorrect
The main factors that affect nerve impulse speed are myelination, axon diameter, and temperature. Larger and myelinated axons conduct signals faster.
nope
The refractory period is the short time after an action potential when the neuron cannot fire another signal immediately. This helps the signal move in one direction.
not quite
The axon terminal is responsible for transmitting signals to other neurons by releasing neurotransmitters across the synapse.
nope
The correct order is: action potential travels down the axon, neurotransmitters are released, neurotransmitters cross the synapse, receptors bind the neurotransmitters, and the next neuron is stimulated.
Neuron Signal Quiz
Keimarys Velasquez
Created on April 28, 2026
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Transcript
Quiz
Neuron Signal Quiz
completed quiz
not quite
The action potential begins when sodium channels open and sodium enters the neuron.
nope!
The structures directly involved in generating an action potential are the axon membrane, voltage-gated ion channels, and ions such as sodium and potassium. Myelin helps speed conduction but does not create the action potential itself.
incorrect
The correct order is: resting potential, threshold is reached, sodium channels open, depolarization occurs, potassium channels open, repolarization occurs, and the membrane returns to resting potential..
WRONG!
The myelin sheath increases the speed of nerve impulses by allowing signals to jump between nodes of Ranvier. This process is called saltatory conduction.
incorrect!
Repolarization mainly occurs when potassium ions leave the neuron, making the inside of the cell negative again after depolarization.
incorrect
The main factors that affect nerve impulse speed are myelination, axon diameter, and temperature. Larger and myelinated axons conduct signals faster.
nope
The refractory period is the short time after an action potential when the neuron cannot fire another signal immediately. This helps the signal move in one direction.
not quite
The axon terminal is responsible for transmitting signals to other neurons by releasing neurotransmitters across the synapse.
nope
The correct order is: action potential travels down the axon, neurotransmitters are released, neurotransmitters cross the synapse, receptors bind the neurotransmitters, and the next neuron is stimulated.