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Action Potential and Neurotransmitters

Action Potential and Neurotransmitters

Assessment

Flashcard

Science

11th Grade

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is an action potential?

Back

An action potential is an electrical impulse that travels along the axon of a neuron, resulting from the rapid depolarization and repolarization of the neuron's membrane.

2.

FLASHCARD QUESTION

Front

What is the significance of -55 mV in neurons?

Back

-55 mV is the threshold potential that must be reached for an action potential to occur.

3.

FLASHCARD QUESTION

Front

What is the normal resting potential of a neuron?

Back

The normal resting potential of a neuron cell membrane is approximately -70 mV.

4.

FLASHCARD QUESTION

Front

What role do dendrites play in a neuron?

Back

Dendrites receive signals from other neurons and transmit them to the cell body.

5.

FLASHCARD QUESTION

Front

What occurs during depolarization of a neuron?

Back

During depolarization, sodium ions (Na+) rush into the neuron, causing the membrane potential to become more positive.

6.

FLASHCARD QUESTION

Front

What is the function of neurotransmitters?

Back

Neurotransmitters are chemical messengers that transmit signals across synapses from one neuron to another.

7.

FLASHCARD QUESTION

Front

What happens at the axon terminal?

Back

At the axon terminal, neurotransmitters are released into the synaptic cleft to communicate with the next neuron.

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