What is the function of an axon in a neuron?

Transmits signals to dendrites or cell body of other neurons

How can the structure of an axon be described?

Slender, tail-like extension of neuron

Thick, root-like extension of neuron

To which of the following does an axon transmit signals?

Muscles, glands, other parts of body

What is the function of the axon in a neuron?

It transmits impulses away from the cell body.

It carries out the metabolic functions of the neuron.

It receives impulses from other neurons.

What is the role of the cell body in a neuron?

It carries out the metabolic functions of the neuron.

It transmits impulses to other neurons.

It speeds up the transmission of impulses.

What is the purpose of the myelin sheath in a neuron?

To protect and insulate the axon.

To receive impulses from other neurons.

To carry out the metabolic functions of the neuron.

To branch out and connect with other neurons.

What do glial cells do with waste products in the nervous system?

Remove waste products (dead neurons); handle metabolic tasks

What are synaptic clefts?

The chemical signals transmitted by neurons

The protective covering of axons

The junctions where neurons connect with muscles

What is the state of a neuron when it is at rest and not firing?

It carries a negative electrical potential compared to fluid outside the cell

It has a positive electrical potential

It is more positive inside the axon than outside

It is inactive and cannot carry any electrical potential

During the resting potential, how are the ions distributed inside the axon?

More negative ions than positive ions

More positive ions than negative ions

Equal number of positive and negative ions

No ions are present inside the axon

What happens when a neuron is stimulated?

Membrane potential changes to a negative value.

No change occurs in the neuron.

What is the all or none law in the context of neural impulses?

Neurons either fire at full intensity or not at all.

Neurons fire at varying intensities depending on the stimulus.

Neurons can choose when to fire based on the type of stimulus.

Neurons fire continuously without any breaks.

What is the myelin sheath?

A white, fatty coating around some axons.

A part of the brain responsible for neural impulses.

What occurs immediately after a neuron fires and causes some positive particles to be actively pumped out of the cell?

The neuron undergoes repolarization.

The neuron reaches its resting potential.

The neuron enters a state of depolarization.

The neuron experiences an action potential.

During the action potential, what happens to the inside of the neuron?

It becomes positively charged compared to the outside.

It becomes more negatively charged compared to the outside.

It remains at the resting potential.

It loses all electrical charge.

What is the role of receptor sites in neurons?

They interact with neurotransmitters.

They generate electrical impulses.

They release neurotransmitters.

They protect the neuron from damage.

What happens to neurotransmitters during reuptake?

They are taken from the synaptic cleft into the axon terminal.

They are released into the synaptic cleft.

They attach to the receptor sites.

What triggers the release of neurotransmitters from the synaptic vesicles?

The action potential arrives at the axon terminal.

The receiving neuron fires an action potential.

Neurotransmitters bind with receptor sites.

Neurotransmitters flow into the synaptic cleft.

What is the role of neurotransmitters in synaptic transmission?

They influence the receiving neuron to fire or not to fire.

They generate the action potential in the sending neuron.

They create the synaptic cleft between neurons.

They serve as the axon terminal in the sending neuron.

Where do neurotransmitters bind after being released into the synaptic cleft?

Receptor sites on the receiving neuron

What is the synaptic cleft?

The space between the sending neuron and the receiving neuron

The part of the neuron that generates action potentials

The receptors that bind neurotransmitters

What is the role of Acetylcholine (ACh) in the nervous system?

It can be either excitatory or inhibitory and is involved in muscle activation and learning processes.

It only excites skeletal muscle fibres.

It only inhibits heart muscle fibres.

It has no role in the nervous system.

Which type of muscle fibres does Acetylcholine (ACh) excite?

It does not excite any muscle fibres

What effect does Acetylcholine (ACh) have on heart muscle fibres?

It inhibits heart muscle fibres.

It excites heart muscle fibres.

It has no effect on heart muscle fibres.

It strengthens heart muscle fibres.

What is the role of Dopamine (DA) in the human body?

Excitatory and inhibitory functions

What is the function of epinephrine (adrenalin) in the body?

It affects the metabolism of glucose.

It regulates mood and appetite.

¿Dónde está activo principalmente el glutamato?

En las estructuras cerebrales superiores

En las estructuras cerebrales inferiores

En el sistema nervioso periférico

Neuron Function

Passage

•

Science

•

8th Grade

•

Practice Problem

•

Hard

•

NGSS

HS-LS1-3, MS-LS1-8, MS-LS1-3

Standards-aligned

Charles Martinez

FREE Resource

55 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the function of afferent (sensory) neurons?

They send signals to the brain and spinal cord from glands and muscles.

They relay messages from sense organs and receptors to the brain or spinal cord.

They control voluntary movements.

They are responsible for reflex actions.

What do efferent (motor) neurons do?

They carry messages from the brain to the sense organs.

They process information in the brain.

They send signals from the brain and spinal cord to glands and muscles, causing movement.

They receive signals from the external environment.

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Interneurons are thousands of times more numerous than which types of neurons?

Sensory neurons

Neurons in the heart

Neurons in the muscles

Neurons in the liver

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the primary function of interneurons?

To carry oxygen

To carry information

To carry nutrients

To carry waste products

Where do interneurons transmit signals between?

Between neurons in the brain and neurons in the spinal cord

Between neurons in the heart and neurons in the lungs

Between neurons in the muscles and neurons in the liver

Between neurons in the eyes and neurons in the ears

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What does the cell body of a neuron contain?

Mitochondria

Nucleus

Ribosomes

Chloroplast

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the function of dendrites in a neuron?

Transmit signals to other neurons

Carry out metabolic functions

Contain the nucleus

Receive signals from other neurons

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Neuron Function

55 questions

What is the function of afferent (sensory) neurons?

What do efferent (motor) neurons do?

Interneurons are thousands of times more numerous than which types of neurons?

What is the primary function of interneurons?

Where do interneurons transmit signals between?

What does the cell body of a neuron contain?

What is the function of dendrites in a neuron?

Which part of the neuron carries out metabolic functions?

What is the function of an axon in a neuron?

How can the structure of an axon be described?

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