Question 1

Opiate drugs derived from poppies relieve pain in humans because the human nervous system has

Accepted Answer

A)  neurotransmitters.
B)  receptors for endogenous opiates.
C)  myelin.
D)  sodium and potassium membrane channels.E) A) and B)
F) A) and C)

Question 2

Neurons that conduct impulses from the CNS to muscles or glands are

Accepted Answer

A)  sensory neurons.
B)  interneurons.
C)  motor neurons.
D)  unipolar neurons.E) A) and B)
F) A) and C)

Question 3

A(n)______ is the junction between neurons.

Accepted Answer

The answer of A(n)______ is the junction between neurons....

Question 4

Which of the following ions cross neuron cell membranes most readily?

Accepted Answer

A)  Potassium
B)  Sodium
C)  Calcium
D)  MagnesiumE) None of the above
F) All of the above

Question 5

Saltatory conduction

Accepted Answer

A)  occurs only if the myelin sheath is continuous.
B)  occurs only if nodes of Ranvier are lacking.
C)  is faster than conduction on an unmyelinated fiber.
D)  is slower than conduction on an unmyelinated fiber.E) A) and C)
F) A) and B)

Question 6

Synaptic knobs are at the ends of

Accepted Answer

A)  axons.
B)  dendrites.
C)  cell bodies.
D)  neuroglia.E) A) and B)
F) A) and C)

Question 7

An immune response that affects the myelin coating on axons throughout the spinal cord and brain,triggering inflammation and leaving scars is

Accepted Answer

A)  muscular dystrophy.
B)  multiple sclerosis.
C)  Alzheimer disease.
D)  amyotrophic lateral sclerosis.E) B) and C)
F) A) and C)

Question 8

If a neuron receives a series of stimuli whose effect is excitatory but subthreshold,the neuron is more excitable to incoming stimulation than before and is said to be

Accepted Answer

A)  graded.
B)  amplified.
C)  facilitated.
D)  refractory.E) A) and B)
F) A) and C)

Question 9

During the absolute refractory period,a stimulus of high intensity may trigger a nerve impulse.

Accepted Answer

A) True 
 B)False

Question 10

The difference in electrical charge between the inside and outside of a polarized neuron cell membrane is called the ______ ______.

Accepted Answer

The answer of The difference in electrical charge between the...

Question 11

Drugs that inhibit the enzyme monoamine oxidase

Accepted Answer

A)  allow increased activity of norepinephrine.
B)  decompose norepinephrine.
C)  decrease the activity of serotonin.
D)  decompose serotonin.E) A) and D)
F) B) and C)

Question 12

A neuron may have

Accepted Answer

A)  one axon and many dendrites.
B)  one dendrite and many axons.
C)  no dendrites.
D)  no axons.E) A) and B)
F) B) and D)

Question 13

Which of the following molecules is responsible for "runner's high," a good feeling that accompanies long-distance running?

Accepted Answer

A)  Beta endorphin
B)  Acetylcholine
C)  Epinephrine
D)  DopamineE) B) and D)
F) None of the above

Question 14

The neurotransmitter most likely produced when a person uses a drug that creates a sense of well-being is

Accepted Answer

A)  glutamic acid.
B)  dopamine.
C)  enkephalin.
D)  substance Q.E) B) and C)
F) All of the above

Question 15

Interneurons are specialized to carry impulses from receptor cells into the brain or spinal cord.

Accepted Answer

A) True 
 B)False

Question 16

Migraine results from

Accepted Answer

A)  release of calcitonin gene-related peptide from the trigeminal nerves at the base of the brain,in response to a spreading wave of excitation followed by lack of response from the cortex.
B)  not eating enough chocolate,which causes a spreading effect in the cortex.
C)  a neurotransmitter deficiency.
D)  release of an abnormal form of beta endorphin from the trigeminal nerves at the base of the brain,in response to cortical stimulation.E) All of the above
F) A) and B)

Question 17

Action potentials are related to impulses conducted along an axon in that

Accepted Answer

A)  many impulses are required to cause one action potential.
B)  active transport of Na+ and K+ are required for impulse conduction but not for an action potential.
C)  impulses are stronger responses than are action potentials.
D)  propagation of a series of action potentials along a nerve cell fiber constitutes an impulse.E) None of the above
F) All of the above

Question 18

The space between neurons is called the neuronal space.

Accepted Answer

A) True 
 B)False

Question 19

Neural stem cells can be harvested from autopsies and stored,alive,in banks,whereas neurons cannot,because

Accepted Answer

A)  people do not will them to science.
B)  neural stem cells have lower oxygen and energy requirements than neurons.
C)  neural stem cells have higher oxygen and energy requirements than neurons.
D)  neural stem cells have more globular shapes than neurons.E) None of the above
F) A) and C)

Question 20

A nerve cell membrane becomes depolarized as a result of

Accepted Answer

A)  calcium leaving the nerve cell.
B)  some ion channels being opened while others are closed.
C)  the relative ease with which K+ diffuses into the nerve cell.
D)  Na+ being prevented from passing through the membrane.E) All of the above
F) A) and B)

Exam 10: Nervous System I

Neurons that conduct impulses from the CNS to muscles or glands are

Correct AnswerverifiedShow Answer

If a neuron receives a series of stimuli whose effect is excitatory but subthreshold,the neuron is more excitable to incoming stimulation than before and is said to be

Correct AnswerverifiedShow Answer

Action potentials are related to impulses conducted along an axon in that

Correct AnswerverifiedShow Answer

A neuron may have

Correct AnswerverifiedShow Answer

During the absolute refractory period,a stimulus of high intensity may trigger a nerve impulse.

Correct AnswerverifiedShow Answer

The space between neurons is called the neuronal space.

Correct AnswerverifiedShow Answer

Opiate drugs derived from poppies relieve pain in humans because the human nervous system has

Correct AnswerverifiedShow Answer

Synaptic knobs are at the ends of

Correct AnswerverifiedShow Answer

Which of the following molecules is responsible for "runner's high," a good feeling that accompanies long-distance running?

Correct AnswerverifiedShow Answer

Interneurons are specialized to carry impulses from receptor cells into the brain or spinal cord.

Correct AnswerverifiedShow Answer

Neural stem cells can be harvested from autopsies and stored,alive,in banks,whereas neurons cannot,because

Correct AnswerverifiedShow Answer

An immune response that affects the myelin coating on axons throughout the spinal cord and brain,triggering inflammation and leaving scars is

Correct AnswerverifiedShow Answer

Saltatory conduction

Correct AnswerverifiedShow Answer

The difference in electrical charge between the inside and outside of a polarized neuron cell membrane is called the ______ ______.

Correct AnswerverifiedShow Answer

Migraine results from

Correct AnswerverifiedShow Answer

A nerve cell membrane becomes depolarized as a result of

Correct AnswerverifiedShow Answer

A(n)______ is the junction between neurons.

Correct AnswerverifiedShow Answer

Drugs that inhibit the enzyme monoamine oxidase

Correct AnswerverifiedShow Answer

The neurotransmitter most likely produced when a person uses a drug that creates a sense of well-being is

Correct AnswerverifiedShow Answer

Which of the following ions cross neuron cell membranes most readily?

Correct AnswerverifiedShow Answer

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The difference in electrical charge between the inside and outside of a polarized neuron cell membrane is called the .

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