Vincent Voltaire
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Psychology Quiz sobre Chapter 3 - part 1: The Anatomy of the Nervous System, criado por Vincent Voltaire em 07-02-2020.

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Chapter 3 - part 1: The Anatomy of the Nervous System

Questão 1 de 62

1

Which cells in the nervous system do most of the work of receiving, integrating, and transmitting information?

Selecione uma das seguintes:

  • neurons

  • glial cells

  • axons

  • dendrites

Explicação

Questão 2 de 62

1

Which of the following is the most accurate description of the structure and function of all neurons in your central nervous system?

Selecione uma das seguintes:

  • All neurons contain a cell body and an axon, and may have other structures.

  • All neurons receive information via one or more dendrites and send information via one or more axons.

  • All neurons synapse onto another neuron in order to transmit an electrical signal.

  • All neurons receive and send information.

Explicação

Questão 3 de 62

1

Which of the following is NOT one of the main functions of neurons?

Selecione uma das seguintes:

  • integrating information

  • generating information

  • transmitting information

  • receiving information

Explicação

Questão 4 de 62

1

What are three basic components of most neurons?

Selecione uma das seguintes:

  • vesicles, terminal buttons, synapses

  • myelin, nodes, axon terminals

  • cell body, axon, dendrites

  • hindbrain, midbrain, forebrain

Explicação

Questão 5 de 62

1

Which neuronal structures are analogous to branches on a tree?

Selecione uma das seguintes:

  • dendrites

  • axons

  • nuclei

  • cell bodies

Explicação

Questão 6 de 62

1

On a typical neuron, which structure receives neurochemical information, and which structure sends
neurochemical information to other neurons?

Selecione uma das seguintes:

  • Dendrites receive; axons send.

  • Axons send; synapses receive.

  • Dendrites receive; synapses send.

  • Axons receive; dendrites send.

Explicação

Questão 7 de 62

1

In computers, the keyboard is the component of the computer that receives information. What would the
keyboard be equivalent to, in comparing a computer to a neuron?

Selecione uma das seguintes:

  • axon

  • soma

  • dendrite

  • terminal button

Explicação

Questão 8 de 62

1

Emma has a disorder that includes degeneration of myelin sheaths in her nervous system. Which of the following disorders does Emma most likely have?

Selecione uma das seguintes:

  • Alzheimer’s disease

  • multiple sclerosis

  • Broca’s aphasia

  • Parkinson’s disease

Explicação

Questão 9 de 62

1

Which of the following is associated with the fastest neural impulses?

Selecione uma das seguintes:

  • unmyelinated dendrites

  • myelinated axons

  • shorter axons

  • multiple dendrites

Explicação

Questão 10 de 62

1

When you want to print something from a computer, a cable carries this signal from the computer to the printer.
In comparing a computer and printer to two neurons, what is the neuronal equivalent to the cable?

Selecione uma das seguintes:

  • synapse

  • soma

  • terminal button

  • axon

Explicação

Questão 11 de 62

1

When you are printing something from your computer, your cable must be securely connected to the printer or
else the signal won’t get through. If you compared a computer and printer to two neurons, what is the neuronal
equivalent of the connection between the cable and the printer?

Selecione uma das seguintes:

  • synapse

  • soma

  • terminal button

  • axon

Explicação

Questão 12 de 62

1

Which part of the neuron secretes neurotransmitters?

Selecione uma das seguintes:

  • neuromodulators

  • dendrites

  • myelin sheaths

  • terminal buttons

Explicação

Questão 13 de 62

1

Which of the following is the correct sequence of structures through which information flows in a neuron?

Selecione uma das seguintes:

  • dendrites to axon to soma

  • axon to glia to dendrites

  • glia to dendrites to axon

  • dendrites to soma to axon

Explicação

Questão 14 de 62

1

What are the cells that provide structural support and insulation for neurons?

Selecione uma das seguintes:

  • synapses

  • sheaths

  • glia

  • soma

Explicação

Questão 15 de 62

1

What is the primary role of glial cells?

Selecione uma das seguintes:

  • They form the primary components of the spinal cord.

  • They provide support for neurons.

  • They release neurotransmitters.

  • They release neuromodulators.

Explicação

Questão 16 de 62

1

What would happen if you were to lose all of your glial cells?

Selecione uma das seguintes:

  • There would be no change in functioning, because neurons are the cells that are important for transmission of information within the nervous system.

  • One hemisphere could not send information to the other hemisphere.

  • Your neurons would no longer have a normal chemical environment, and there would be problems with efficient neurotransmission.

  • You would no longer be able to send neurotransmitters from one cell to another.

Explicação

Questão 17 de 62

1

Which of the following is a characteristic of both sodium and potassium ions?

Selecione uma das seguintes:

  • They carry a negative charge.

  • They are concentrated inside the neuron’s cell body.

  • They carry a positive charge.

  • They are capable of changing their potentials.

Explicação

Questão 18 de 62

1

What do we call the tiny electrical charge that exists when a neuron is neither receiving nor sending information?

Selecione uma das seguintes:

  • resting potential

  • action potential

  • post-synaptic potential

  • inhibitory potential

Explicação

Questão 19 de 62

1

When a neuron is neither receiving nor sending, what is the approximate voltage of the electrical charge that
exists between the inside and the outside of a neuron?

Selecione uma das seguintes:

  • –700 millivolts

  • –70 millivolts

  • +70 millivolts

  • +700 millivolts

Explicação

Questão 20 de 62

1

Bradley is deeply relaxed and many of his muscles are not moving at all. What does this suggest about many of
Bradley’s motor neurons?

Selecione uma das seguintes:

  • They have a voltage of +70 millivolts.

  • They have a voltage of –70 millivolts.

  • They are in a relative refractory period.

  • They are in an absolute refractory period.

Explicação

Questão 21 de 62

1

When the sodium channels of a neuron open, allowing sodium ions to flow inside, which of the following is most
likely to happen next?

Selecione uma das seguintes:

  • a resting potential

  • an action potential

  • a refractory period

  • reuptake

Explicação

Questão 22 de 62

1

What is an action potential?

Selecione uma das seguintes:

  • an electrical signal that travels along the axon of a neuron

  • the small gap that exists between adjacent neurons

  • the tiny electrical charge that exists when a neuron is neither receiving nor sending information

  • the release of neurotransmitters

Explicação

Questão 23 de 62

1

Tracey became dehydrated during a recent illness, and the levels of sodium in her body were significantly
reduced. What would we expect to occur if enough sodium was lost?

Selecione uma das seguintes:

  • Her nervous system would become highly activated, and action potentials would be generated
    continuously.

  • More neurotransmitters would be produced in her terminal buttons.

  • Fewer action potentials would occur in her nervous system.

  • Glial cells would start to degenerate and die.

Explicação

Questão 24 de 62

1

A neuron just sent a neural impulse. It will be one to two milliseconds before another neural impulse can be
generated. What do we call this brief time increment, when another neural impulse cannot occur?

Selecione uma das seguintes:

  • resting potential

  • absolute refractory period

  • postsynaptic discharge

  • all-or-none period

Explicação

Questão 25 de 62

1

What is the term for the minimum length of time between action potentials?

Selecione uma das seguintes:

  • relative threshold period

  • transduction interval

  • absolute refractory period

  • synaptic interval

Explicação

Questão 26 de 62

1

Which of the following is known about action potentials?

Selecione uma das seguintes:

  • They travel more slowly if the incoming stimulation is less intense.

  • They are stronger when the incoming stimulation is more intense.

  • They are generated in an all-or-none fashion.

  • They are seldom strong enough to reach the terminal buttons.

Explicação

Questão 27 de 62

1

What is the typical speed of an action potential?

Selecione uma das seguintes:

  • at least 600 kilometres/hour

  • up to 300 kilometres/hour

  • approximately the speed of light (300,000 kilometres/second)

  • approximately the speed of sound (1236 kilometres/hour)

Explicação

Questão 28 de 62

1

Sara is holding Scott’s hand during a scary movie. Suddenly she squeezes his hand very hard. When she does
this, what will the nerves in Scott’s hand do?

Selecione uma das seguintes:

  • release more GABA

  • send larger action potentials to his central nervous system

  • enter an absolute refractory period

  • start to fire at a faster rate

Explicação

Questão 29 de 62

1

Fiona puts her hands into a bucket of lukewarm water; Luke puts his hands into a bucket of ice-cold water.
What should we predict about each of their action potentials?

Selecione uma das seguintes:

  • Only Fiona will experience enough stimulation to trigger an action potential.

  • Luke will have inhibitory action potentials.

  • Their action potentials will differ in rate, due to differences in the intensity of the stimuli.

  • Their action potentials will differ in size, due to differences in the intensity of the stimuli.

Explicação

Questão 30 de 62

1

Peggy smells a very strong odour; Harry smells an odour that is barely detectable. Based on what is known
about neural transmission, what should we predict about each of their action potentials?

Selecione uma das seguintes:

  • They will be the same size but at different rates.

  • Peggy’s will be excitatory, and Harry’s will be inhibitory.

  • They will be weaker in Harry’s system because the stimulus is less intense.

  • They will be distinguished by the amount of inhibition they exert on synapses.

Explicação

Questão 31 de 62

1

What do we call the space between a terminal button and a dendrite?

Selecione uma das seguintes:

  • the transmission gap

  • the midsynaptic potential range

  • the synaptic cleft

  • the neuromodulator

Explicação

Questão 32 de 62

1

Where are neurotransmitters stored?

Selecione uma das seguintes:

  • in the dendrites

  • in the mitochondria

  • in the axon

  • in the synaptic vesicles

Explicação

Questão 33 de 62

1

What do synaptic vesicles do?

Selecione uma das seguintes:

  • They fuse with the postsynaptic cell.

  • They store neurotransmitters.

  • They block receptors.

  • They manufacture myelin.

Explicação

Questão 34 de 62

1

What happens when a neurotransmitter is released from a presynaptic neuron, but it does not fit into a suitable
receptor channel on the postsynaptic neuron?

Selecione uma das seguintes:

  • The firing potential of the postsynaptic neuron will not be affected.

  • An inhibitory postsynaptic potential will be generated.

  • A graded potential will be generated.

  • The presynaptic neuron will be inhibited.

Explicação

Questão 35 de 62

1

What is a good analogy for the way in which a neurotransmitter binds to receptor sites?

Selecione uma das seguintes:

  • the lowering of a drawbridge

  • a key fitting in a lock

  • the pulling of a gun trigger

  • the opening and closing of a window

Explicação

Questão 36 de 62

1

What type of electric potential increases the likelihood that the postsynaptic neuron will fire?

Selecione uma das seguintes:

  • all-or-none potential

  • excitatory postsynaptic potential

  • inhibitory postsynaptic potential

  • a resting potential

Explicação

Questão 37 de 62

1

The voltage at a receptor site has just changed from –70 millivolts to –75 millivolts. What caused the change?

Selecione uma das seguintes:

  • excitatory postsynaptic potential

  • influx of potassium ions

  • influx of sodium ions

  • inhibitory postsynaptic potential

Explicação

Questão 38 de 62

1

The voltage at a receptor site has just changed from –70 millivolts to –67 millivolts. What will this lead to?

Selecione uma das seguintes:

  • an absolute refractory period

  • increased likelihood of an action potential

  • decreased likelihood of an action potential

  • a relative refractory period

Explicação

Questão 39 de 62

1

What do we call the process of absorption of neurotransmitters into the presynaptic neuron?

Selecione uma das seguintes:

  • reuptake

  • neurotransmission

  • graded potential

  • inhibition

Explicação

Questão 40 de 62

1

Which of the following is the correct sequence of steps through which neurotransmitters progress during synaptic
transmission?

Selecione uma das seguintes:

  • binding, synthesis, release, inactivation, reuptake

  • synthesis, release, binding, inactivation, reuptake

  • synthesis, binding, release, reuptake, inactivation

  • release, synthesis, binding, reuptake, inactivation

Explicação

Questão 41 de 62

1

If a brain has several synapses that are not particularly active, those synapses may be eliminated. What is this process called?

Selecione uma das seguintes:

  • synaptic pruning

  • inhibition

  • natural selection

  • long-term potentiation

Explicação

Questão 42 de 62

1

At what age do humans tend to have the largest number of synapses?

Selecione uma das seguintes:

  • at birth

  • at 1 year

  • at puberty

  • after physical growth has ended in early adulthood

Explicação

Questão 43 de 62

1

According to the Hebbian Learning Rule, if an axon of Cell A is near enough to repeatedly stimulate Cell B (causing it to fire often), then what will happen to Cell B?

Selecione uma das seguintes:

  • Cell B will eventually stop responding to Cell A.

  • Cell B will merge with Cell A.

  • Cell B will be pruned because it is redundant with Cell A.

  • Cell B will become more likely to fire in response to signals from Cell A.

Explicação

Questão 44 de 62

1

Which of the following neurotransmitters is primarily involved in the activation of motor neurons controlling skeletal muscles?

Selecione uma das seguintes:

  • GABA

  • acetylcholine

  • serotonin

  • norepinephrine

Explicação

Questão 45 de 62

1

Jeremy is sitting quietly when the voluntary muscles in his left leg begin to twitch. Which neurotransmitter is likely being released?

Selecione uma das seguintes:

  • serotonin

  • norepinephrine

  • acetylcholine

  • GABA

Explicação

Questão 46 de 62

1

When your text states that nicotine functions as an acetylcholine agonist, what does that mean?

Selecione uma das seguintes:

  • It interacts with acetylcholine to produce a novel effect.

  • It occupies acetylcholine receptor sites, thus blocking the action of the neurotransmitter.

  • It stimulates some acetylcholine synapses.

  • It inhibits some acetylcholine release.

Explicação

Questão 47 de 62

1

What does an agonist do?

Selecione uma das seguintes:

  • It extends the absolute refractory period of neural transmission.

  • It blocks the action of neurotransmitters.

  • It mimics the action of a neurotransmitter.

  • It prevents reuptake of neurotransmitters.

Explicação

Questão 48 de 62

1

Curare blocks the action of acetylcholine by occupying its receptor sites. In this context, what is curare?

Selecione uma das seguintes:

  • a neurotransmitter

  • an agonist

  • a neuromodulator

  • an antagonist

Explicação

Questão 49 de 62

1

Dr. Jacoby has just discovered a new drug named Z2W that is an antagonist to acetylcholine. What are some likely side effects of this new drug?

Selecione uma das seguintes:

  • hallucinations and disrupted sleep patterns

  • general stimulation within the body and an increase in heart rate

  • sleepiness and loss of interest in activities

  • motor and memory problems

Explicação

Questão 50 de 62

1

Dr. Ferracane has just discovered a new drug named GL8 that produces side effects such as paralysis and memory loss. Based on this information, how might this drug act on the nervous system?

Selecione uma das seguintes:

  • as an agonist for GABA

  • as an antagonist for GABA

  • as an antagonist for acetylcholine

  • as an agonist for acetylcholine

Explicação

Questão 51 de 62

1

What seems to be a primary cause of Parkinson’s disease?

Selecione uma das seguintes:

  • degeneration of neurons that use dopamine as a neurotransmitter

  • degeneration of myelin sheaths

  • antagonistic effects on acetylcholine receptors

  • damage to glial cells

Explicação

Questão 52 de 62

1

Garrett has a chronic disease that is slowly destroying the cells that produce serotonin in his brain. Which of the following will likely happen to Garrett as his disease progresses?

Selecione uma das seguintes:

  • His memory will gradually worsen.

  • He will start to show signs of Parkinson’s disease.

  • His sleep and mood will be disrupted.

  • He will begin to experience symptoms of schizophrenia.

Explicação

Questão 53 de 62

1

Which of the following disorders is associated with reduced activity at norepinephrine and serotonin receptors?

Selecione uma das seguintes:

  • depression

  • schizophrenia

  • Parkinson’s disease

  • multiple sclerosis

Explicação

Questão 54 de 62

1

Julia is currently in the midst of a major depression. Which of the following patterns of neurotransmitter activity is most likely to be associated with her symptoms?

Selecione uma das seguintes:

  • reduced levels of GABA

  • increased activity at serotonin synapses

  • increased levels of dopamine

  • reduced activity at norepinephrine synapses

Explicação

Questão 55 de 62

1

Stuart abuses a drug that is a dopamine agonist. Which of the following is Stuart most likely to experience when he is high?

Selecione uma das seguintes:

  • deep relaxation

  • hallucinations

  • temporary paralysis

  • excessive anxiety

Explicação

Questão 56 de 62

1

Caitlin has taken a drug that has reduced the levels of GABA in her nervous system. What side effect is Caitlin likely to experience?

Selecione uma das seguintes:

  • motor tics and other involuntary motor movements

  • increased levels of anxiety

  • depression

  • hallucinations

Explicação

Questão 57 de 62

1

Dr. Athorp has just discovered a new drug named P3X that is an agonist for GABA. What effects will this drug likely have?

Selecione uma das seguintes:

  • hallucinations and disrupted sleep patterns

  • general stimulation within the body and an increase in heart rate

  • a reduction in pain and a sense of euphoria

  • anxiety reduction and general relaxation

Explicação

Questão 58 de 62

1

Which of the following neurotransmitters always has inhibitory effects?

Selecione uma das seguintes:

  • GABA

  • glutamate

  • acetylcholine

  • norepinephrine

Explicação

Questão 59 de 62

1

Which of the following neurotransmitters has effects on learning and memory, and on long-term potentiation?

Selecione uma das seguintes:

  • GABA

  • glutamate

  • acetylcholine

  • norepinephrine

Explicação

Questão 60 de 62

1

Opiate drugs bind onto the same receptor sites as the body’s own endorphins. What effect, then, do opiate
drugs have?

Selecione uma das seguintes:

  • They increase anxiety and agitation.

  • They inhibit visual sensations.

  • They produce insomnia.

  • They relieve pain.

Explicação

Questão 61 de 62

1

Which of the following neurotransmitters is most similar to the drug heroin?

Selecione uma das seguintes:

  • acetylcholine

  • dopamine

  • endorphins

  • serotonin

Explicação

Questão 62 de 62

1

If you were making a new drug to treat pain, which type of neurotransmitter would you attempt to mimic?

Selecione uma das seguintes:

  • dopamine

  • monoamines

  • acetylcholine

  • endorphins

Explicação