Neurons and Action Potentials

Neurons and Action Potentials

University

10 Qs

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Neurons and Action Potentials

Neurons and Action Potentials

Assessment

Quiz

Science

University

Practice Problem

Medium

Created by

Richard Howe

Used 88+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the electrical impulse that neurons send?

Voltage

Current

Action potential

Resistance

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the resting membrane potential of a neuron?

-70 mV

-55 mV

+40 mV

+75 mV

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term for a small, localized change in membrane potential?

Action potential

Graded potential

Hyperpolarization

Repolarization

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

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