Question 1

The more frequently an action potential is triggered by a stimulus, the greater the intensity of the sensation.

Accepted Answer

A) True 
 B)False

Question 2

Aliceʹs PET (positron emission tomography) scan shows a large red area in the occipital lobe when taken while Alice is looking at color images. Which of the following is TRUE about Aliceʹs PET scan?

Accepted Answer

A)  The occipital lobe had the highest level of activity. 
B)  The occipital lobe was the only area of Aliceʹs brain that was active. 
C)  This scan proves the old saying that we use only 10% of our brains. 
D)  The darkest areas of Aliceʹs brain were the most active. 
A)  The occipital lobe had the highest level of activity. 
B)  The occipital lobe was the only area of Aliceʹs brain that was active. 
C)  This scan proves the old saying that we use only 10% of our brains. 
D)  The darkest areas of Aliceʹs brain were the most active.

Question 3

The dorsal root ganglia of the spinal cord contain cell bodies of __________neurons.

Accepted Answer

The answer of The dorsal root ganglia of the spinal...

Question 4

A person you know has been in an automobile accident. The accident caused a dramatic personality change. Before the accident, he was industrious and well liked; after the accident, he is profane, impetuous, and incapable of working toward a goal. Which portion of the brain was most likely damaged?

Accepted Answer

A)  Hippocampus 
B)  Frontal lobe 
C)  Hypothalamus 
D)  Parietal lobe 
E)  Temporal lobe 
A)  Hippocampus 
B)  Frontal lobe 
C)  Hypothalamus 
D)  Parietal lobe 
E)  Temporal lobe

Question 5

Axons

Accepted Answer

A)  have receptors for neurotransmitters. 
B)  receive information from the external environment. 
C)  process information. 
D)  form the gray matter of the brain and spinal cord. 
E)  carry action potentials. 
A)  have receptors for neurotransmitters. 
B)  receive information from the external environment. 
C)  process information. 
D)  form the gray matter of the brain and spinal cord. 
E)  carry action potentials.

Question 6

What is the function of cerebrospinal fluid?

Accepted Answer

To cushion

Question 7

To survive the winter, some birds, such as the black-capped chickadee, must locate caches of seeds it buries each fall. Which region of the brain allows the birds to remember the exact locations of these stashes?

Accepted Answer

A)  Hypothalamus 
B)  Occipital lobe 
C)  Hippocampus 
D)  Frontal lobe 
E)  Amygdala 
A)  Hypothalamus 
B)  Occipital lobe 
C)  Hippocampus 
D)  Frontal lobe 
E)  Amygdala

Question 8

Dolphins use echolocation to maneuver around objects quickly and precisely to capture prey. Thus, you would expect them to have a larger -than-normal

Accepted Answer

A)  cerebrum. 
B)  amygdala. 
C)  limbic system. 
D)  hypothalamus. 
E)  cerebellum. 
A)  cerebrum. 
B)  amygdala. 
C)  limbic system. 
D)  hypothalamus. 
E)  cerebellum.

Question 9

The __________is a cluster of neurons that plays a role in wake-sleep cycles, muscle tone, emotions, and some reflexes.

Accepted Answer

A)  cerebral cortex 
B)  pons 
C)  reticular formation 
D)  medulla 
E)  hypothalamus 
A)  cerebral cortex 
B)  pons 
C)  reticular formation 
D)  medulla 
E)  hypothalamus

Question 10

The part of a neuron that contains a nucleus and other organelles typical of cells is the__________.

Accepted Answer

The answer of The part of a neuron that contains...

Question 11

People with multiple sclerosis develop areas in which the myelin sheath on their neurons has disintegrated. This disease often results in paralysis and extreme weakness. Using what you know about the myelin sheath, explain why these symptoms might occur.

Accepted Answer

The myelin sheath enables nerv

Question 12

In an unstimulated neuron, the plasma membrane is most permeable to ions.

Accepted Answer

A)  sodium (Na+) 
B)  sugar 
C)  chloride (Cl?) 
D)  calcium (Ca2+) 
E)  potassium (K+) 
A)  sodium (Na+) 
B)  sugar 
C)  chloride (Cl?) 
D)  calcium (Ca2+) 
E)  potassium (K+)

Question 13

The corpus callosum links the

Accepted Answer

A)  cerebrum and thalamus. 
B)  thalamus and hypothalamus. 
C)  forebrain and midbrain. 
D)  peripheral and central nervous systems. 
E)  right and left cerebral hemispheres. 
A)  cerebrum and thalamus. 
B)  thalamus and hypothalamus. 
C)  forebrain and midbrain. 
D)  peripheral and central nervous systems. 
E)  right and left cerebral hemispheres.

Question 14

-What type of nervous system is exhibited by the hydra?

Accepted Answer

A)  Diffuse nervous system 
B)  Somatic nervous system 
C)  Centralized nervous system 
D)  Hydra doesn?t have a nervous system 
E)  Peripheral nervous system 
A)  Diffuse nervous system 
B)  Somatic nervous system 
C)  Centralized nervous system 
D)  Hydra doesn?t have a nervous system 
E)  Peripheral nervous system

Question 15

Which of the following does NOT describe the autonomic nervous system?

Accepted Answer

A)  It forms synapses with smooth muscles in blood vessels. 
B)  It is subdivided into sympathetic and parasympathetic divisions. 
C)  Neurons release norepinephrine or acetylcholine onto their target organ. 
D)  It regulates heart rate. 
E)  It controls voluntary movements. 
A)  It forms synapses with smooth muscles in blood vessels. 
B)  It is subdivided into sympathetic and parasympathetic divisions. 
C)  Neurons release norepinephrine or acetylcholine onto their target organ. 
D)  It regulates heart rate. 
E)  It controls voluntary movements.

Question 16

The stronger the stimulus, the more powerful the action potential.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is part of the peripheral nervous system?

Accepted Answer

A)  Thalamus 
B)  Medulla 
C)  Spinal cord 
D)  Autonomic nervous system 
E)  Brain 
A)  Thalamus 
B)  Medulla 
C)  Spinal cord 
D)  Autonomic nervous system 
E)  Brain

Question 18

Dendrites release neurotransmitters at synapses.)

Accepted Answer

A) True 
 B)False

Question 19

At the synapse, some neurotransmitters open ion channels that make the interior of the postsynaptic neuron more negative. Thus, these neurotransmitters produce a(n) __________postsynaptic potential (IPSP).

Accepted Answer

A)  rewarding 
B)  decreasing 
C)  inhibitory 
D)  enhancing 
E)  excitatory 
A)  rewarding 
B)  decreasing 
C)  inhibitory 
D)  enhancing 
E)  excitatory

Question 20

Glutamate is the major excitatory neurotransmitter in the brain. Which drug produces a relaxing effect by blocking the receptors for glutamate?

Accepted Answer

A)  Alcohol 
B)  Nicotine 
C)  Caffeine 
D)  Methamphetamine 
E)  Cocaine 
A)  Alcohol 
B)  Nicotine 
C)  Caffeine 
D)  Methamphetamine 
E)  Cocaine

Exam 39: The Nervous System

The more frequently an action potential is triggered by a stimulus, the greater the intensity of the sensation.

Aliceʹs PET (positron emission tomography) scan shows a large red area in the occipital lobe when taken while Alice is looking at color images. Which of the following is TRUE about Aliceʹs PET scan?

The dorsal root ganglia of the spinal cord contain cell bodies of __________neurons.

A person you know has been in an automobile accident. The accident caused a dramatic personality change. Before the accident, he was industrious and well liked; after the accident, he is profane, impetuous, and incapable of working toward a goal. Which portion of the brain was most likely damaged?

Axons

What is the function of cerebrospinal fluid?

To survive the winter, some birds, such as the black-capped chickadee, must locate caches of seeds it buries each fall. Which region of the brain allows the birds to remember the exact locations of these stashes?

Dolphins use echolocation to maneuver around objects quickly and precisely to capture prey. Thus, you would expect them to have a larger -than-normal

The __________is a cluster of neurons that plays a role in wake-sleep cycles, muscle tone, emotions, and some reflexes.

The part of a neuron that contains a nucleus and other organelles typical of cells is the__________.

People with multiple sclerosis develop areas in which the myelin sheath on their neurons has disintegrated. This disease often results in paralysis and extreme weakness. Using what you know about the myelin sheath, explain why these symptoms might occur.

In an unstimulated neuron, the plasma membrane is most permeable to ions.

The corpus callosum links the

-What type of nervous system is exhibited by the hydra?

Which of the following does NOT describe the autonomic nervous system?

The stronger the stimulus, the more powerful the action potential.

Which of the following is part of the peripheral nervous system?

Dendrites release neurotransmitters at synapses.)

At the synapse, some neurotransmitters open ion channels that make the interior of the postsynaptic neuron more negative. Thus, these neurotransmitters produce a(n) __________postsynaptic potential (IPSP).

Glutamate is the major excitatory neurotransmitter in the brain. Which drug produces a relaxing effect by blocking the receptors for glutamate?

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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