Question 1

The difference between a weak stimulus and an intense stimulus is

Accepted Answer

A)   the action potential is gradated and a weak stimulus causes a small change in polarity.
B)   weak stimuli only open sodium gates, strong stimuli also open potassium gates.
C)   the axon fires at a greater frequency for an intense stimulus.
D)   a strong stimulus does not allow repolarization but sends a constant flow of ions.
E)   an intense stimulus causes more sodium ions to diffuse into the cell.F) A) and B)
G) A) and C)

Question 2

The main function of the cerebrospinal fluid is

Accepted Answer

A)   to provide saltatory transmission.
B)   to provide nutrients for the neurons.
C)   defense of the nervous system against pathogens.
D)   to produce gray matter.
E)   to cushion and protect the central nervous system.F) A) and B)
G) A) and C)

Question 3

One group of neurotransmitters retards heart rate,promotes digestion,contracts the eye pupil,etc.The other group has the opposite effect.These drugs are affecting the

Accepted Answer

A)   motor and sensory nerves.
B)   cerebrum and cerebellum, respectively.
C)   central and peripheral nervous systems.
D)   neurostimulatory and neuroinhibitory synapses.
E)   sympathetic and parasympathetic nervous systems.F) A) and C)
G) B) and E)

Question 4

Administration of norepinephrine would

Accepted Answer

A)   dilate the bronchi and increase oxygen for blood.
B)   slow heartbeat.
C)   stimulate the digestive system to supply more sugar to the blood.
D)   cause the pupil of the eye to contract.
E)   promote an overall relaxed state.F) B) and D)
G) B) and C)

Question 5

Which of the following is not part of the brain?

Accepted Answer

A)   the cerebrum
B)   the diencephalon
C)   the cerebellum
D)   the brain stem
E)   the meningesF) B) and D)
G) B) and C)

Question 6

Which of the following drugs is a powerful CNS stimulant?

Accepted Answer

A)   methamphetamine
B)   heroin
C)   marijuana
D)   alcohol
E)   All of these are powerful CNS stimulants.F) A) and C)
G) D) and E)

Question 7

Language is NOT dependent on

Accepted Answer

A)   memory.
B)   the thalamus.
C)   Broca's area.
D)   Wernicke's area.
E)   the spinal cord.F) C) and D)
G) None of the above E

Question 8

Which of the following is not a symptom of addiction to a certain drug?

Accepted Answer

A)   the drug continues to cause physical or psychological changes in your body
B)   it takes more drug to cause the same changes as before
C)   you cannot function without having the drug
D)   you spend more and more time trying to get the drug and/or thinking about using the drug
E)   you quit eating as long as you can use the drugF) A) and B)
G) None of the above

Question 9

Which of the following is not a way that a drug affects the brain?

Accepted Answer

A)   cause the neurotransmitter to leak out of a synaptic vesicle into the axon terminal
B)   promote the release of the neurotransmitter into the synaptic cleft
C)   block the enzyme that causes breakdown of the neurotransmitter
D)   mimics the action of a neurotransmitter by binding to the receptor
E)   builds up along the outside of the brain because it cannot pass the blood-brain barrierF) A) and B)
G) A) and C)

Question 10

Which is NOT a correct association of disease with cause or symptoms?

Accepted Answer

A)   multiple sclerosis-myelin sheath lesions impair normal conduction of impulses
B)   Parkinson's disease-malfunction of the basal nuclei
C)   Alzheimer's disease-gradual death of brain cells in hippocampus due to calcium ion influx
D)   fetal alcohol syndrome-increased intelligence and physical performance
E)   cocaine overdose-seizures and cardiac or respiratory arrestF) A) and C)
G) A) and E)

Question 11

Which body part is associated with only the primary somatosensory area?

Accepted Answer

A)   genitals
B)   pharynx
C)   tongue
D)   face
E)   thumbF) C) and D)
G) C) and E)

Question 12

Neurotransmitters are molecules that cross the synaptic cleft via

Accepted Answer

A)   active transport and always inhibit the postsynaptic neuron.
B)   acitve transport and always excite the postsynaptic neuron.
C)   passive diffusion and either excite or inhibit the postsynaptic neuron.
D)   passive diffusion and always inhibit the postsynaptic neuron.
E)   passive diffusion and always excite the postsynaptic neuron.F) A) and C)
G) C) and D) C

Question 13

Both meningitis and kuru involve infectious agents.

Accepted Answer

A) True 
 B)False  True

Question 14

The cerebrum is the largest portion of the brain in humans.

Accepted Answer

A) True 
 B)False

Question 15

If you have extreme difficulties learning how to hit a baseball or play the piano,there may be a problem with your cerebellum.

Accepted Answer

A) True 
 B)False

Question 16

Which disease is associated with mild tremors in one or more limbs,abnormally high levels of glutamate in the cerebrospinal fluid and onset between the ages of 40 and 60?

Accepted Answer

A)   amyotrophic lateral sclerosis
B)   Guillain-Barre syndrome
C)   myasthenia gravis
D)   multiple sclerosis
E)   Parkinson's diseaseF) B) and C)
G) None of the above

Question 17

In dissection,most nerve fibers appear gray to white because

Accepted Answer

A)   the neuron is gray to white colored.
B)   sodium ions are part of the salt compound and they flow along the surface.
C)   they rapidly die and dead tissues soon become gray or white.
D)   they are mostly myelin sheath made of lipid or fat molecules.
E)   they consume large amounts of energy in the form of sugar.F) C) and D)
G) A) and E)

Question 18

Which lobe of the cerebrum is responsible for vision?

Accepted Answer

A)   frontal
B)   parietal
C)   temporal
D)   occipital
E)   insularF) A) and D)
G) A) and E)

Question 19

Which part of the brain is used to integrate incoming information and send it to the appropriate portion of the cerebrum?

Accepted Answer

A)   hypothalamus
B)   cerebellum
C)   thalamus
D)   limbic system
E)   basal nucleiF) A) and E)
G) B) and E)

Question 20

The sodium/potassium pump is primarily responsible for the

Accepted Answer

A)   resting potential.
B)   action potential.
C)   excretion of salts.
D)   contraction of muscle fibers.
E)   maintaining isotonic water balance.F) A) and B)
G) A) and D)

Exam 17: Nervous System

The difference between a weak stimulus and an intense stimulus is

Correct AnswerverifiedShow Answer

The main function of the cerebrospinal fluid is

Correct AnswerverifiedShow Answer

One group of neurotransmitters retards heart rate,promotes digestion,contracts the eye pupil,etc.The other group has the opposite effect.These drugs are affecting the

Correct AnswerverifiedShow Answer

Administration of norepinephrine would

Correct AnswerverifiedShow Answer

Which of the following is not part of the brain?

Correct AnswerverifiedShow Answer

Which of the following drugs is a powerful CNS stimulant?

Correct AnswerverifiedShow Answer

Language is NOT dependent on

Correct AnswerverifiedE

Which of the following is not a symptom of addiction to a certain drug?

Correct AnswerverifiedShow Answer

Which of the following is not a way that a drug affects the brain?

Correct AnswerverifiedShow Answer

Which is NOT a correct association of disease with cause or symptoms?

Correct AnswerverifiedShow Answer

Which body part is associated with only the primary somatosensory area?

Correct AnswerverifiedShow Answer

Neurotransmitters are molecules that cross the synaptic cleft via

Correct AnswerverifiedC

Both meningitis and kuru involve infectious agents.

Correct AnswerverifiedTrue

The cerebrum is the largest portion of the brain in humans.

Correct AnswerverifiedShow Answer

If you have extreme difficulties learning how to hit a baseball or play the piano,there may be a problem with your cerebellum.

Correct AnswerverifiedShow Answer

Which disease is associated with mild tremors in one or more limbs,abnormally high levels of glutamate in the cerebrospinal fluid and onset between the ages of 40 and 60?

Correct AnswerverifiedShow Answer

In dissection,most nerve fibers appear gray to white because

Correct AnswerverifiedShow Answer

Which lobe of the cerebrum is responsible for vision?

Correct AnswerverifiedShow Answer

Which part of the brain is used to integrate incoming information and send it to the appropriate portion of the cerebrum?

Correct AnswerverifiedShow Answer

The sodium/potassium pump is primarily responsible for the

Correct AnswerverifiedShow Answer

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E

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C

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True

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