Question 1

Which part of a simple reflex takes the message away from the CNS?

Accepted Answer

A)   sensory neuron
B)   receptor
C)   interneuron
D)   motor neuron
E)   effectorF) B) and E)
G) A) and B)

Question 2

Which structures are associated with the limbic system?

Accepted Answer

A)   cerebral lobes, basal nuclei, and diencephalon
B)   cerebral lobes, basal nuclei, and spinal cord
C)   cerebral lobes, peripheral nerves, and diencephalon
D)   cerebellum, basal nuclei, and diencephalon
E)   spinal cord, basal nuclei, and diencephalonF) All of the above
G) D) and E)

Question 3

Transmission of a nerve impulse from one neuron to another neuron is dependent on

Accepted Answer

A)   the presence of calcium ions.
B)   a neurotransmitter.
C)   a synaptic cleft.
D)   a presynaptic and postsynaptic membrane.
E)   All of the answer choices are requirements for the transmission of a nerve impulse.F) A) and C)
G) A) and D)

Question 4

Language is dependent on

Accepted Answer

A)   memory.
B)   the thalamus.
C)   Broca's area.
D)   Wernicke's area.
E)   All of the answers are areas of the brain involved in language.F) A) and B)
G) None of the above

Question 5

The membranes that protect the brain and spinal cord are called

Accepted Answer

A)   cerebrospinal membranes.
B)   meninges.
C)   ventricles.
D)   epithelium.
E)   gray matter.F) D) and E)
G) A) and E)

Question 6

The interconnecting spaces that produce and serve as a reservoir for cerebrospinal fluid in the brain are known as

Accepted Answer

A)   meninges.
B)   ventricles.
C)   corpus callosum.
D)   insula.
E)   ganglia.F) B) and C)
G) A) and B)

Question 7

A reflex

Accepted Answer

A)   is an automatic, involuntary response.
B)   does not require the central nervous system.
C)   is normally controlled consciously.
D)   has no protective value.
E)   involves only sensory neurons.F) D) and E)
G) A) and B)

Question 8

The likely effect on a neuron of 2 excitatory signals and 20 inhibitory signals is

Accepted Answer

A)   transmission of a nerve impulse.
B)   transmission of a nerve impulse, releasing excitatory neurotransmitters at the next synapse.
C)   transmission of a nerve impulse, releasing inhibitory neurotransmitters at the next synapse.
D)   prohibiting the axon from firing at all.
E)   confused integration.F) B) and C)
G) C) and E)

Question 9

Explain why a blow to the base of the skull, damaging the medulla oblongata, can result in death.

Accepted Answer

The medulla oblongata regulates vital fu...

Question 10

In order for transmission across the synapse to occur

Accepted Answer

A)   synaptic vesicles fuse with the postsynaptic membrane.
B)   neurotransmitters are released from the postsynaptic membrane.
C)   synaptic vesicles fuse with the presynaptic membrane.
D)   neurotransmitters are actively transported from the presynaptic to the postsynaptic membrane.
E)   the postsynaptic membrane must be in the refractory period.F) All of the above
G) A) and D) C

Question 11

Heroin binds to receptors on neurons that travel from the spinal cord to the region of the brain that feels pleasure. These receptors are normally meant for

Accepted Answer

A)   epinephrine.
B)   norepinephrine.
C)   dopamine.
D)   endorphins.
E)   acetylcholine.F) A) and C)
G) All of the above

Question 12

In a reflex arc, nerve impulses are carried to the effector by a(n)

Accepted Answer

A)   interneuron.
B)   sensory neuron.
C)   receptor.
D)   motor neuron.
E)   either the sensory neuron or the interneuron.F) A) and C)
G) B) and D) E

Question 13

Generally, nerve impulses do not move "backward" along a series of neurons. What is the reason for this?

Accepted Answer

A)   There is a short refractory period during which sodium gates cannot open and an action potential cannot move backwards.
B)   Once the signal has passed, the nerves separate from each other so it cannot go backwards.
C)   At the synapse, the presynaptic membrane has receptors, ensuring the transmission only goes one way.
D)   Once the sodium channels open, they cannot be closed.
E)   The resting potential of the neuron prevents it from conducting an impulse.F) B) and E)
G) D) and E)

Question 14

Which of the following describes a way that drugs can affect the brain?

Accepted Answer

A)   Drugs cause neurotransmitters to leak out of a synaptic vesicle into the axon terminal.
B)   Drugs promote the release of the neurotransmitter into the synaptic cleft.
C)   Drugs block the enzyme that causes breakdown of the neurotransmitter.
D)   Drugs mimic the action of a neurotransmitter by binding to the receptor.
E)   All of the answer choices describe ways that drugs can affect the brain.F) C) and E)
G) C) and D)

Question 15

In a medical study involving a physicist suffering from a herpesvirus, it was discovered that which structure was involved in the conversion of short-term memories to long-term memories?

Accepted Answer

A)   hippocampus
B)   diencephalon
C)   amygdala
D)   brain stem
E)   cerebellumF) B) and C)
G) A) and D) A

Question 16

Which statement is true about the development of an action potential?

Accepted Answer

A)   Depolarization continues until a potential of +15 mV is reached.
B)   It requires three types of gated channels.
C)   The action potential ends when the polarity across the membrane reaches +40 mV.
D)   Depolarization occurs when sodium gates open and allow sodium ions to enter the axon.
E)   Potassium gates open before the sodium gates and allow potassium ions to leave the axon.F) C) and E)
G) A) and D)

Question 17

Which brain structure acts as a conduit for sending messages to long-term memory and retrieving them?

Accepted Answer

A)   hippocampus
B)   amygdala
C)   pons
D)   brain stem
E)   cerebellumF) A) and E)
G) A) and B)

Question 18

Explain the transmission across a synapse from one neuron to another.

Accepted Answer

1. An action potential arrives at an axo...

Question 19

Which of the following describes semantic memory?

Accepted Answer

A)   ability to perform difficult motor activities
B)   being able to recall telephone numbers
C)   brief or temporary recall of recent events
D)   ideas, concepts, and meanings
E)   remembering persons or eventsF) D) and E)
G) B) and D)

Question 20

What are the potential effects of heavy marijuana usage?

Accepted Answer

A)   hallucinations, anxiety, depression, body image distortion, and other psychotic symptoms
B)   a decrease in dopamine production
C)   a decrease in the natural production of endorphins
D)   the release of excess dopamine production
E)   All of the answer choices are potential effects of heavy marijuana usage.F) C) and E)
G) B) and C)

Exam 17: Nervous System

Which part of a simple reflex takes the message away from the CNS?

Correct AnswerverifiedShow Answer

Which structures are associated with the limbic system?

Correct AnswerverifiedShow Answer

Transmission of a nerve impulse from one neuron to another neuron is dependent on

Correct AnswerverifiedShow Answer

Language is dependent on

Correct AnswerverifiedShow Answer

The membranes that protect the brain and spinal cord are called

Correct AnswerverifiedShow Answer

The interconnecting spaces that produce and serve as a reservoir for cerebrospinal fluid in the brain are known as

Correct AnswerverifiedShow Answer

A reflex

Correct AnswerverifiedShow Answer

The likely effect on a neuron of 2 excitatory signals and 20 inhibitory signals is

Correct AnswerverifiedShow Answer

Explain why a blow to the base of the skull, damaging the medulla oblongata, can result in death.

Correct AnswerverifiedThe medulla oblongata regulates vital fu...View AnswerShow Answer

In order for transmission across the synapse to occur

Correct AnswerverifiedC

Heroin binds to receptors on neurons that travel from the spinal cord to the region of the brain that feels pleasure. These receptors are normally meant for

Correct AnswerverifiedShow Answer

In a reflex arc, nerve impulses are carried to the effector by a(n)

Correct AnswerverifiedE

Generally, nerve impulses do not move "backward" along a series of neurons. What is the reason for this?

Correct AnswerverifiedShow Answer

Which of the following describes a way that drugs can affect the brain?

Correct AnswerverifiedShow Answer

In a medical study involving a physicist suffering from a herpesvirus, it was discovered that which structure was involved in the conversion of short-term memories to long-term memories?

Correct AnswerverifiedA

Which statement is true about the development of an action potential?

Correct AnswerverifiedShow Answer

Which brain structure acts as a conduit for sending messages to long-term memory and retrieving them?

Correct AnswerverifiedShow Answer

Explain the transmission across a synapse from one neuron to another.

Correct Answerverified1. An action potential arrives at an axo...View AnswerShow Answer

Which of the following describes semantic memory?

Correct AnswerverifiedShow Answer

What are the potential effects of heavy marijuana usage?

Correct AnswerverifiedShow Answer

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The medulla oblongata regulates vital fu...
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C

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E

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A

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1. An action potential arrives at an axo...
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