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The brain structure that controls unconscious but essential functions such as breathing and circulation is the


A) pons.
B) medulla.
C) cerebellum.
D) corpus callosum.

E) C) and D)
F) B) and C)

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Which statement most accurately describes the process of synaptic transmission?


A) As depolarization progresses the firing threshold is reached and an action potential occurs.
B) Synaptic vesicles secrete neurotransmitters which diffuse over to the receptor sites on the dendrites of another neuron.
C) After firing potassium ions rush out of the neural membrane in a process called repolarization.
D) The action potential jumps from one node to the next until it reaches the terminal buttons.

E) None of the above
F) B) and D)

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The tiny electrical charge that exists when a neuron is not receiving and/or sending information is called


A) an action potential.
B) a synaptic gap.
C) a resting potential.
D) a post synaptic potential.

E) A) and B)
F) A) and C)

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On the way home from the library last night you heard the footsteps of someone following you. You turned and saw the shadow of a large man heading towards you. You ran to your car faster than you had ever run. By the time you got to your car your heart rate was rapid and you were sweating. This fight or flight response was most likely the result of activity in your


A) somatic nervous system.
B) sympathetic nervous system.
C) parasympathetic nervous system.
D) central nervous system.

E) A) and B)
F) None of the above

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


A) the opening and closing of a window.
B) a key fitting in the lock of a door.
C) the lowering of a drawbridge.
D) the pulling of the trigger of a gun.

E) A) and B)
F) B) and D)

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Greg was a world-class diver until he hit his head on the diving board during one of his dives. He now has difficulty coordinating the movements required for various tucks and rotations. It is likely that when he hit his head on the diving board, Greg damaged his


A) cerebellum.
B) reticular formation.
C) amygdala.
D) temporal lobe

E) All of the above
F) A) and B)

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The space between a terminal button and a dendrite is referred to as the


A) midsynaptic potential range.
B) transmission gap.
C) neuromodulator.
D) synaptic cleft.

E) A) and B)
F) A) and C)

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The electrical charge inside a neuron when it is in its resting state is approximately


A) +600 volts.
B) +60 millivolts.
C) -700 volts.
D) -70 millivolts.

E) A) and B)
F) A) and C)

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Some theorists believe that the rewarding effects of most abused drugs depend on


A) decreased activity in specific dopamine pathways.
B) decreased activity in specific glutamate pathways.
C) increased activity in specific glutamate pathways.
D) increased activity in specific dopamine pathways.

E) C) and D)
F) B) and D)

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Caitlin has taken a drug that has reduced the levels of GABA in her nervous system. One of the side effects that Caitlin is likely to experience will be


A) depression.
B) motor tics and other involuntary motor movements.
C) hallucinations.
D) increased levels of anxiety.

E) B) and C)
F) A) and B)

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If a neuron is not receiving any input or information, the neuron is at its


A) baseline potential.
B) neurotransmitter potential.
C) action potential.
D) resting potential.

E) None of the above
F) B) and D)

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Deterioration of a structure in the ____ that contains dopamine-releasing neurons is involved in Parkinson's disease.


A) hindbrain
B) midbrain
C) forebrain
D) limbic system

E) All of the above
F) B) and C)

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ESB involves


A) sending a weak electric current into a brain structure to stimulate or activate the structure.
B) monitoring the electrical activity of the brain over time.
C) visualizing the three-dimensional structure of the brain.
D) destroying a piece of the brain.

E) B) and C)
F) A) and B)

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The cells in the nervous system that provide support and insulation for other cells are the


A) neurons.
B) glia cells.
C) synapse cells.
D) terminal cells.

E) All of the above
F) C) and D)

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Sam is highly relaxed. His blood pressure and heart rate are lower then usual. This relaxation response was most likely the result of activity in your


A) somatic nervous system.
B) sympathetic nervous system.
C) parasympathetic nervous system.
D) central nervous system.

E) A) and C)
F) A) and B)

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Destroying a piece of brain tissue to observe its effect on behavior is referred to as which of the following?


A) ESB
B) lesioning
C) tumor ligation
D) stereotaxic inversion

E) C) and D)
F) B) and C)

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The difference in the flow rates of sodium and potassium ions across the cell membrane leads to


A) a slightly higher concentration of negatively charged ions inside the cell.
B) a negatively charged action potential.
C) a slightly lower concentration of negatively charged ions inside the cell.
D) both a negatively charged action potential and a slightly lower concentration of negatively charged ions inside the cell.

E) A) and B)
F) A) and C)

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While ____ postsynaptic potentials increase the likelihood of the postsynaptic neuron firing an action potential, ____ postsynaptic potentials decrease the likelihood.


A) active; passive
B) axonic; dendritic
C) excitatory; inhibitory
D) inhibitory; excitatory

E) A) and C)
F) B) and D)

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Reabsorption of neurotransmitters into the presynaptic neuron is referred to as


A) cyclomyosis.
B) regrading.
C) uploading.
D) reuptake.

E) B) and D)
F) A) and D)

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The part of the neuron that has branched extensions that are specialized to receive information are the


A) dendrites.
B) terminal buttons.
C) somas.
D) axons.

E) All of the above
F) A) and C)

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