WorksheetsNeurons and Action Potentials
Total questions: 10
Worksheet time: 5mins
What is the name of the electrical impulse that neurons send?
Voltage
Current
Action potential
Resistance
What is the resting membrane potential of a neuron?
-70 mV
-55 mV
+40 mV
+75 mV
What is the purpose of the sodium-potassium pump in a neuron?
To create a difference in charge between the inside and outside of the neuron
To open voltage-gated channels
To repolarize the neuron
To trigger action potentials
What happens when a neuron reaches its threshold potential?
The neuron returns to its resting state
The neuron undergoes hyperpolarization
Voltage-gated sodium channels open
Voltage-gated potassium channels open
What is the purpose of the refractory period in a neuron?
To prevent signals from traveling in both directions down the axon
To maintain the resting membrane potential
To trigger the sodium-potassium pump
To open ligand-gated channels
What is the term for a small, localized change in membrane potential?
Action potential
Graded potential
Hyperpolarization
Repolarization
What is the purpose of myelin sheath on an axon?
To increase the frequency of action potentials
To decrease the conduction velocity of action potentials
To prevent action potentials from occurring
To increase the conduction velocity of action potentials
What is the term for the propagation of an action potential from one gap in the myelin to the next?
Saltatory conduction
Voltage-gated conduction
Graded conduction
Mechanically-gated conduction
What happens during repolarization of a neuron?
Voltage-gated sodium channels open
Voltage-gated potassium channels open
The neuron undergoes hyperpolarization
The sodium-potassium pump is activated
What is the main force behind every action, thought, and feeling in the body?
Voltage
Current
Resistance
Action potentials
