Question 1

What does the concept of neuronal plasticity imply?

Accepted Answer

A)  that the nervous system is composed of a fixed and static group of structures 
B)  that the nervous system can be reorganized or remodeled 
C)  that the nervous system loses functionality as animals age 
D)  that the nervous system of humans is more advanced than those of other animals 
A)  that the nervous system is composed of a fixed and static group of structures 
B)  that the nervous system can be reorganized or remodeled 
C)  that the nervous system loses functionality as animals age 
D)  that the nervous system of humans is more advanced than those of other animals

Question 2

What part of the brain sorts incoming information, such as touch signals from your hand, into categories before relaying it to the cerebral cortex?

Accepted Answer

A)  thalamus 
B)  hypothalamus 
C)  pons 
D)  hippocampus 
A)  thalamus 
B)  hypothalamus 
C)  pons 
D)  hippocampus

Question 3

The functional unit of the nervous system is the

Accepted Answer

A)  cell body. 
B)  neuron. 
C)  axon. 
D)  synapse. 
A)  cell body. 
B)  neuron. 
C)  axon. 
D)  synapse.

Question 4

Once an action potential is triggered, there is a

Accepted Answer

A)  reversal of the membrane polarity, with the interior of the cell becoming positively charged. 
B)  reversal of the membrane polarity, with the interior of the cell becoming negatively charged. 
C)  sudden rush of potassium into the neuron. 
D)  sudden impermeability of the membrane to the transport of ions. 
A)  reversal of the membrane polarity, with the interior of the cell becoming positively charged. 
B)  reversal of the membrane polarity, with the interior of the cell becoming negatively charged. 
C)  sudden rush of potassium into the neuron. 
D)  sudden impermeability of the membrane to the transport of ions.

Question 5

When you are very nervous, perhaps before you must speak in front of your class, you notice that your mouth is dry and your heart is racing. This is most likely due to stimulation by the

Accepted Answer

A)  enteric division of your autonomic nervous system. 
B)  sympathetic division of your autonomic nervous system. 
C)  parasympathetic division of your autonomic nervous system. 
A)  enteric division of your autonomic nervous system. 
B)  sympathetic division of your autonomic nervous system. 
C)  parasympathetic division of your autonomic nervous system.

Question 6

What part of the brain allows us to recognize the emotional content of facial expressions and also helps lay down emotional memories?

Accepted Answer

A)  hippocampus 
B)  amygdala 
C)  prefrontal cortex 
D)  corpus callosum 
A)  hippocampus 
B)  amygdala 
C)  prefrontal cortex 
D)  corpus callosum

Question 7

Which best describes the protective action of blinking?

Accepted Answer

A)  An interneuron detects motion and sends this message to the peripheral nervous system (PNS), and the PNS sends a message back to blink. 
B)  A sensory receptor detects motion, a sensory neuron sends this information to the spinal cord, and the information in the central nervous system (CNS) sends a message back to blink. 
C)  A cell body detects motion, a sensory neuron sends this message to the peripheral nervous system (PNS), and the PNS sends a message back to blink. 
D)  A cell body detects motion, a sensory neuron sends this message to the spinal cord, and the information in the central nervous system (CNS) sends a message back to blink. 
A)  An interneuron detects motion and sends this message to the peripheral nervous system (PNS), and the PNS sends a message back to blink. 
B)  A sensory receptor detects motion, a sensory neuron sends this information to the spinal cord, and the information in the central nervous system (CNS) sends a message back to blink. 
C)  A cell body detects motion, a sensory neuron sends this message to the peripheral nervous system (PNS), and the PNS sends a message back to blink. 
D)  A cell body detects motion, a sensory neuron sends this message to the spinal cord, and the information in the central nervous system (CNS) sends a message back to blink.

Question 8

Valium, a prescription drug used to treat anxiety, works by

Accepted Answer

A)  binding and activating acetylcholine receptors. 
B)  preventing serotonin reuptake into neurons. 
C)  increasing the release and availability of norepinephrine and dopamine at synapses. 
D)  activating receptors for GABA. 
A)  binding and activating acetylcholine receptors. 
B)  preventing serotonin reuptake into neurons. 
C)  increasing the release and availability of norepinephrine and dopamine at synapses. 
D)  activating receptors for GABA.

Question 9

The effect of a sending neuron on a receiving neuron is typically greater when ________ neurotransmitters bind to the receiving neuron and the synapse is ________ the base of the receiving cell's axon.

Accepted Answer

A)  more; close to 
B)  fewer; close to 
C)  more; far from 
D)  fewer; far from 
A)  more; close to 
B)  fewer; close to 
C)  more; far from 
D)  fewer; far from

Question 10

Which part of this diagram of the human brain depicts the cerebellum?

Accepted Answer

A)  part A 
B)  part B 
C)  part C 
D)  part D 
A)  part A 
B)  part B 
C)  part C 
D)  part D

Question 11

Schizophrenia

Accepted Answer

A)  can best be described as feeling a sense of worthlessness. 
B)  is often associated with hallucinations and paranoid delusions. 
C)  causes changes in body weight and sleeping patterns. 
D)  is best defined as a type of mental deterioration or dementia. 
A)  can best be described as feeling a sense of worthlessness. 
B)  is often associated with hallucinations and paranoid delusions. 
C)  causes changes in body weight and sleeping patterns. 
D)  is best defined as a type of mental deterioration or dementia.

Question 12

Which statement regarding the brain is true?

Accepted Answer

A)  Ventricles in the brain are filled with interstitial fluid. 
B)  The blood-brain barrier helps to maintain a stable chemical environment for the brain. 
C)  Layers of connective tissue, called epithelium, surround and protect the brain and spinal cord. 
D)  White matter is composed of mainly dendrites. 
A)  Ventricles in the brain are filled with interstitial fluid. 
B)  The blood-brain barrier helps to maintain a stable chemical environment for the brain. 
C)  Layers of connective tissue, called epithelium, surround and protect the brain and spinal cord. 
D)  White matter is composed of mainly dendrites.

Question 13

Once the threshold is reached as a cell depolarizes

Accepted Answer

A)  K+ channels open. 
B)  Na+ channels close. 
C)  an action potential is triggered. 
D)  the interior of the cell becomes negative with respect to the outside. 
A)  K+ channels open. 
B)  Na+ channels close. 
C)  an action potential is triggered. 
D)  the interior of the cell becomes negative with respect to the outside.

Question 14

Which statement regarding brain activity is true?

Accepted Answer

A)  Recent research has revealed that the 1848 accident involving Phineas Gage caused damage to his hindbrain. 
B)  People usually die following a hemispherectomy. 
C)  People cannot function when the communication channels between the hemispheres are cut. 
D)  Electrical stimulation of the cerebral cortex can cause people to experience sensations. 
A)  Recent research has revealed that the 1848 accident involving Phineas Gage caused damage to his hindbrain. 
B)  People usually die following a hemispherectomy. 
C)  People cannot function when the communication channels between the hemispheres are cut. 
D)  Electrical stimulation of the cerebral cortex can cause people to experience sensations.

Question 15

-In what stage(s) is(are) voltage-gated sodium channels opening?

Accepted Answer

A)  stage 2 only 
B)  stage 3 only 
C)  stages 2 and 3 
D)  stages 3 and 4 
E)  stages 2, 3, and 4 
A)  stage 2 only 
B)  stage 3 only 
C)  stages 2 and 3 
D)  stages 3 and 4 
E)  stages 2, 3, and 4

Exam 28: Nervous Systems

What does the concept of neuronal plasticity imply?

What part of the brain sorts incoming information, such as touch signals from your hand, into categories before relaying it to the cerebral cortex?

The functional unit of the nervous system is the

Once an action potential is triggered, there is a

When you are very nervous, perhaps before you must speak in front of your class, you notice that your mouth is dry and your heart is racing. This is most likely due to stimulation by the

What part of the brain allows us to recognize the emotional content of facial expressions and also helps lay down emotional memories?

Which best describes the protective action of blinking?

Valium, a prescription drug used to treat anxiety, works by

The effect of a sending neuron on a receiving neuron is typically greater when ________ neurotransmitters bind to the receiving neuron and the synapse is ________ the base of the receiving cell's axon.

Which part of this diagram of the human brain depicts the cerebellum?

Schizophrenia

Which statement regarding the brain is true?

Once the threshold is reached as a cell depolarizes

Which statement regarding brain activity is true?

-In what stage(s) is(are) voltage-gated sodium channels opening?

Biology: Exploring Life

The Chemical Basis of Life

The Molecules of Cells

A Tour of the Cell

The Working Cell

How Cells Harvest Chemical Energy

Photosynthesis: Using Light to Make Food

The Cellular Basis of Reproduction and Inheritance

Patterns of Inheritance

Molecular Biology of the Gene

How Genes Are Controlled

DNA Technology and Genomics

How Populations Evolve

The Origin of Species

Tracing Evolutionary History

Microbial Life: Prokaryotes and Protists

The Evolution of Plant and Fungal Diversity

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The Evolution of Vertebrate Diversity

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Gas Exchange

Circulation

The Immune System

Control of Body Temperature and Water Balance

Hormones and the Endocrine System

Reproduction and Embryonic Development

The Senses

How Animals Move

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Control Systems in Plants

The Biosphere: an Introduction to Earths Diverse Environments

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The effect of a sending neuron on a receiving neuron is typically greater when neurotransmitters bind to the receiving neuron and the synapse is the base of the receiving cell's axon.