Question 1

When curare blocks the action of acetylcholine by occupying its receptor sites, it is acting

Accepted Answer

A)   as an agonist.
B)   as an antagonist.
C)   as a neurotransmitter.
D)   as a placebo.E) A) and B)
F) None of the above

Question 2

The ____ fluid nourishes the brain and provides a protective cushion for it.

Accepted Answer

A)   amniotic
B)   cerebrospinal
C)   parasympathetic
D)   somaticE) A) and B)
F) A) and C)

Question 3

Robyn has just eaten a full meal and is now relaxing. Robyn's ____ is in primary control at this time.

Accepted Answer

A)   sympathetic nervous system
B)   parasympathetic nervous system
C)   hormonal system
D)   thyroid glandE) B) and C)
F) A) and B)

Question 4

If IPSP's did not exist,

Accepted Answer

A)   it would be "easier" for a neuron to fire its action potential.
B)   it would be "harder" for a neuron to fire its action potential.
C)   since the action potential happens according to the all-or-none principle there would be no effect on the ease at which the neuron fired its action potential.
D)   action potentials would not occur.E) A) and C)
F) None of the above

Question 5

The minimum length of time between action potentials is determined by

Accepted Answer

A)   transduction capacity.
B)   transduction incapacity.
C)   the absolute refractory period.
D)   the relative threshold period.E) A) and B)
F) B) and D)

Question 6

Which of the following individuals is likely to be at the highest level of sympathetic arousal?

Accepted Answer

A)   Melissa, who is daydreaming and staring out the window
B)   Keith, who is concentrating on a lecturer and taking careful notes
C)   Professor Trong, who is lecturing
D)   Bill, who is anticipating an exam he will take within the hour and for which he is unpreparedE) None of the above
F) A) and B)

Question 7

When a neuron is firing its action potential the neuron's electrical charge is

Accepted Answer

A)   negative and travels along the axon.
B)   negative and travels along the dendrite.
C)   positive and travels along the axon.
D)   positive and travels along the dendrite.E) A) and D)
F) A) and C)

Question 8

An electric potential that increases the likelihood that the postsynaptic neuron will fire is called an

Accepted Answer

A)   all-or-none potential.
B)   inhibitory postsynaptic potential.
C)   excitatory postsynaptic potential.
D)   excitatory presynaptic potential.E) None of the above
F) C) and D)

Question 9

Sara is holding Scott's hand during a scary movie. Suddenly she squeezes his hand very hard. When she does this, the neurons in Scott's hand will

Accepted Answer

A)   start to fire at a faster rate.
B)   send stronger signals to his central nervous system.
C)   enter an absolute refractory period.
D)   release more chloride ions.E) B) and D)
F) All of the above

Question 10

Efferent nerve fibers transmit messages ____ the brain and spinal cord.

Accepted Answer

A)   within or between
B)   away from
C)   toward
D)   away from and towardE) All of the above
F) B) and C)

Question 11

Neurotransmitters are secreted from the

Accepted Answer

A)   myelin sheath.
B)   terminal buttons.
C)   neuromodulators.
D)   dendrites.E) A) and D)
F) None of the above

Question 12

Bonnie has a disease that disrupts the functioning of her hypothalamus. With which of the following areas of functioning is she likely to have serious difficulty with?

Accepted Answer

A)   reading, writing, and tasting.
B)   thinking, problem solving, and hearing.
C)   eating, drinking, and body temperature control.
D)   sexual motivation, tasting, and controlling fine motor movements.E) B) and D)
F) None of the above

Question 13

Which of the following has been implicated in pain alleviation?

Accepted Answer

A)   dopamine
B)   endorphins
C)   acetylcholine
D)   norepinephrineE) B) and D)
F) C) and D)

Question 14

When a neuron is at its resting potential it has

Accepted Answer

A)   an unstable negative charge.
B)   a stable negative charge.
C)   an unstable positive charge.
D)   a stable positive charge.E) All of the above
F) A) and D)

Question 15

The largest and most complex part of the human brain is the

Accepted Answer

A)   medulla.
B)   cerebrum.
C)   cerebellum.
D)   limbic system.E) None of the above
F) B) and C)

Question 16

Edmund was walking down a dark street when he heard a car backfire. His heart started to race and he began to perspire in response to this sudden, startling noise. These physical reactions were triggered by Edmund's

Accepted Answer

A)   parasympathetic nervous system.
B)   somatic nervous system.
C)   sympathetic nervous system.
D)   cerebellum.E) A) and B)
F) A) and C)

Question 17

The occipital lobe of the brain consists primarily of the

Accepted Answer

A)   motor cortex.
B)   primary somatosensory cortex.
C)   auditory cortex.
D)   visual cortex.E) A) and B)
F) A) and C)

Question 18

Bradley is deeply relaxed and his muscles are not moving at all. This suggests that, for Bradley's motor neurons

Accepted Answer

A)   sodium ions are concentrated inside the neurons and potassium ions are concentrated outside the neurons.
B)   sodium ions and potassium ions are both concentrated inside the neurons.
C)   sodium ions and potassium ions are both concentrated outside the neurons.
D)   sodium ions are concentrated outside the neurons and potassium ions are concentrated inside the neurons.E) B) and D)
F) C) and D)

Question 19

The hypothalamus influences or regulates all of the following EXCEPT

Accepted Answer

A)   the autonomic nervous system.
B)   the endocrine system.
C)   memory.
D)   feeding.E) A) and D)
F) C) and D)

Question 20

Which of the following techniques is likely to be MOST useful for locating specific neurotransmitter substances in the brain?

Accepted Answer

A)   computerized tomography
B)   positron emission tomography
C)   magnetic resonance imaging
D)   electrographic tomographyE) A) and D)
F) B) and C)

Exam 5: The Biological Bases of Behavior Part 1

Efferent nerve fibers transmit messages ____ the brain and spinal cord.

Correct AnswerverifiedShow Answer

Robyn has just eaten a full meal and is now relaxing. Robyn's ____ is in primary control at this time.

Correct AnswerverifiedShow Answer

The hypothalamus influences or regulates all of the following EXCEPT

Correct AnswerverifiedShow Answer

When a neuron is at its resting potential it has

Correct AnswerverifiedShow Answer

Bonnie has a disease that disrupts the functioning of her hypothalamus. With which of the following areas of functioning is she likely to have serious difficulty with?

Correct AnswerverifiedShow Answer

Which of the following individuals is likely to be at the highest level of sympathetic arousal?

Correct AnswerverifiedShow Answer

The largest and most complex part of the human brain is the

Correct AnswerverifiedShow Answer

If IPSP's did not exist,

Correct AnswerverifiedShow Answer

When a neuron is firing its action potential the neuron's electrical charge is

Correct AnswerverifiedShow Answer

The occipital lobe of the brain consists primarily of the

Correct AnswerverifiedShow Answer

Which of the following techniques is likely to be MOST useful for locating specific neurotransmitter substances in the brain?

Correct AnswerverifiedShow Answer

Bradley is deeply relaxed and his muscles are not moving at all. This suggests that, for Bradley's motor neurons

Correct AnswerverifiedShow Answer

Which of the following has been implicated in pain alleviation?

Correct AnswerverifiedShow Answer

Sara is holding Scott's hand during a scary movie. Suddenly she squeezes his hand very hard. When she does this, the neurons in Scott's hand will

Correct AnswerverifiedShow Answer

Neurotransmitters are secreted from the

Correct AnswerverifiedShow Answer

The ____ fluid nourishes the brain and provides a protective cushion for it.

Correct AnswerverifiedShow Answer

When curare blocks the action of acetylcholine by occupying its receptor sites, it is acting

Correct AnswerverifiedShow Answer

The minimum length of time between action potentials is determined by

Correct AnswerverifiedShow Answer

Edmund was walking down a dark street when he heard a car backfire. His heart started to race and he began to perspire in response to this sudden, startling noise. These physical reactions were triggered by Edmund's

Correct AnswerverifiedShow Answer

An electric potential that increases the likelihood that the postsynaptic neuron will fire is called an

Correct AnswerverifiedShow Answer

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