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Neurons in the brain that carry messages from one neuron to another and do most of the work of the nervous system are called __________.


A) afferent neurons
B) active neurons
C) efferent neurons
D) interneurons

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The ________ is a structure in the brain stem responsible for life-sustaining functions, such as breathing and heart rate.


A) reticular activating system
B) pons
C) medulla
D) cerebellum

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Curare, a poison, works by ________.


A) blocking receptor sites and acting as an antagonist for acetylcholine
B) stimulating the release of excessive amounts of acetylcholine
C) stimulating the release of neurotransmitters
D) inhibiting the production of inhibitory neurotransmitters

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Which brain structure allows us to pay attention to certain stimuli while ignoring others?


A) medulla
B) cerebellum
C) reticular formation
D) pons

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If Darren's brain is like that of most people, then language will be handled by his ________.


A) corpus callosum
B) occipital lobe
C) right hemisphere
D) left hemisphere

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A young woman returns from a day at the beach to find she has developed a severe sunburn. Which neurons are sending the messages from her burned skin to her brain informing her of the pain from the burn?


A) sensory neurons
B) motor neurons
C) synaptic neurons
D) association neurons

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Specialized cells in the brain which send and receive information are called:


A) limbic cells.
B) neurons.
C) ganglia
D) gonads.

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The two major divisions of the central nervous system are:


A) left and right hemispheres.
B) the brain and autonomic systems.
C) brain and spinal cord.
D) peripheral and autonomic systems.

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In the structure of the neuron, the __________ receives messages from other cells.


A) axon
B) dendrite
C) soma
D) myelin

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The area of the frontal lobe that is devoted to the production of fluent speech is ________ area.


A) Broca's
B) Gall's
C) Wernicke's
D) Korsakoff's

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The point at which the nerves from the left side of the body cross over into the right side of the brain, and vice versa, is the ________.


A) reticular activating system
B) pons
C) medulla
D) cerebellum

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Involuntary muscles are controlled by the __________ nervous system.


A) somatic
B) autonomic
C) sympathetic
D) parasympathetic

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Neuroplasticity is the concept that when the brain is injured, it is unable to change the structure and function of the cells to adjust to the damage.

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The smallest unit in the nervous system is the _________.


A) dendrite
B) neuron
C) axon
D) myelin sheath

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The term "fire" when referring to neural transmission indicates that a neuron:


A) has become less positive in charge.
B) has received, in its dendrites, appropriate inputs from other neurons.
C) is unable to transmit information to another neuron.
D) has become more negative in charge.

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Which technique of studying the brain involves injecting the ?patient with radioactive glucose?


A) EEG
B) CT
C) MRI
D) PET

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Which neurotransmitter is associated with sleep, mood, and appetite?


A) GABA
B) serotonin
C) dopamine
D) acetylcholine

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The somatic nervous system is made up of nerves carrying messages from the central nervous system to the muscles of the body.

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What are the symptoms of Wernicke's aphasia?

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Answered by ExamLex AI

Answered by ExamLex AI

Wernicke's aphasia, also known as recept...

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Why do many reflexes, such as pulling your hand away from a hot iron, happen so quickly?


A) They involve the neurotransmitter GABA rather than dopamine.
B) The message involved does not have to go all the way to the brain.
C) The speed of processing is faster in the frontal lobes than in the occipital lobes.
D) The path that reflexes follow to the brain is direct and does not involve any neurotransmitters.

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