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Indicate Whether the Statements Below Are TRUE or FALSE

Question 21

Matching

Indicate whether the statements below are TRUE or FALSE.If a statement is false, explain why it is false.

Premises:

Responses:

Voltage-gated K⁺ channels also open immediately in response to local depolarization, reducing the magnitude of the action potential.

True

Voltage-gated Na⁺ channels become automatically inactivated shortly after opening, which ensures that the action potential cannot move backward along the axon.

False

Action potentials are usually mediated by voltage-gated Ca²⁺ channels.

Neurotransmitters are small molecules released into the synaptic cleft after the fusion of synaptic vesicles with the presynaptic membrane.

Premises:

Voltage-gated K⁺ channels also open immediately in response to local depolarization, reducing the magnitude of the action potential.

Voltage-gated Na⁺ channels become automatically inactivated shortly after opening, which ensures that the action potential cannot move backward along the axon.

Action potentials are usually mediated by voltage-gated Ca²⁺ channels.

Neurotransmitters are small molecules released into the synaptic cleft after the fusion of synaptic vesicles with the presynaptic membrane.

Responses:

True

False

Correct Answer:

Premises:

Responses:

Voltage-gated K⁺ channels also open immediately in response to local depolarization, reducing the magnitude of the action potential.

Voltage-gated Na⁺ channels become automatically inactivated shortly after opening, which ensures that the action potential cannot move backward along the axon.

Action potentials are usually mediated by voltage-gated Ca²⁺ channels.

Neurotransmitters are small molecules released into the synaptic cleft after the fusion of synaptic vesicles with the presynaptic membrane.