Question 1

-Identify the numbered region in the above graph that indicates the action potential.

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5 D

Question 2

-What part of the neuron is labeled "Section 1"?

Accepted Answer

A)  Cell body 
B)  Myelin 
C)  Axon 
D)  Dendrite 
E)  Synaptic terminal 
A)  Cell body 
B)  Myelin 
C)  Axon 
D)  Dendrite 
E)  Synaptic terminal D

Question 3

Sensory information processing as well as the direction of voluntary movements are carried out by the

Accepted Answer

A)  cerebellum. 
B)  hypothalamus. 
C)  medulla. 
D)  cerebrum. 
E)  amygdala. 
A)  cerebellum. 
B)  hypothalamus. 
C)  medulla. 
D)  cerebrum. 
E)  amygdala. D

Question 4

A diffuse nerve net would be found in which of the following animals?

Accepted Answer

A)  Insect 
B)  Flatworm 
C)  Jellyfish 
D)  Human 
E)  Octopus 
A)  Insect 
B)  Flatworm 
C)  Jellyfish 
D)  Human 
E)  Octopus

Question 5

Motor neurons

Accepted Answer

A)  carry impulses to the brain. 
B)  receive stimuli from inside or outside the body. 
C)  integrate information from many sources. 
D)  send signals to effector organs. 
E)  transmit impulses toward the spinal cord. 
A)  carry impulses to the brain. 
B)  receive stimuli from inside or outside the body. 
C)  integrate information from many sources. 
D)  send signals to effector organs. 
E)  transmit impulses toward the spinal cord.

Question 6

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 7

The more complex the organism, the more likely it is to have nerve net.

Accepted Answer

A) True 
 B)False

Question 8

Nerves are groups of axons bundled together.

Accepted Answer

A) True 
 B)False

Question 9

Which of these neurotransmitters, released by neurons of the sympathetic nervous system, helps prepare the body for energetic activity?

Accepted Answer

A)  Norepinephrine 
B)  Acetylcholine 
C)  Dopamine 
D)  Serotonin 
E)  Endorphin 
A)  Norepinephrine 
B)  Acetylcholine 
C)  Dopamine 
D)  Serotonin 
E)  Endorphin

Question 10

It is possible that brain damage from a stroke or other injury could leave a person with the ability to comprehend written language but not spoken language (assume the person's hearing is fine). Which statement best explains this?

Accepted Answer

A)  The ability to understand written language is controlled by the left cerebral hemisphere, whereas the ability to understand spoken language is controlled by the right cerebral hemisphere. 
B)  Different parts of the brain are involved in different aspects of language comprehension. 
C)  Different cells of the frontal cortex control different aspects of language comprehension. 
D)  The same region of the brain controls all aspects of language comprehension. 
A)  The ability to understand written language is controlled by the left cerebral hemisphere, whereas the ability to understand spoken language is controlled by the right cerebral hemisphere. 
B)  Different parts of the brain are involved in different aspects of language comprehension. 
C)  Different cells of the frontal cortex control different aspects of language comprehension. 
D)  The same region of the brain controls all aspects of language comprehension.

Question 11

Which portion of the neuron typically receives information?

Accepted Answer

A)  Cell body 
B)  Synaptic terminal 
C)  Dendrite 
D)  Axon 
E)  Glia 
A)  Cell body 
B)  Synaptic terminal 
C)  Dendrite 
D)  Axon 
E)  Glia

Question 12

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

Accepted Answer

The answer of The is a cluster of neurons that...

Question 13

The left and right hemispheres of the brain are connected through the _, a large band of axons.

Accepted Answer

The answer of The left and right hemispheres of the...

Question 14

In an unstimulated neuron, the sodium- potassium pump maintains the concentration gradient of sodium and potassium ions by transporting

Accepted Answer

A)  sodium and potassium into the cell. 
B)  sodium and potassium ions in both directions across the cell membrane. 
C)  potassium ions into and sodium ions out of the cell. 
D)  sodium and potassium out of the cell. 
E)  potassium ions out of and sodium ions into the cell. 
A)  sodium and potassium into the cell. 
B)  sodium and potassium ions in both directions across the cell membrane. 
C)  potassium ions into and sodium ions out of the cell. 
D)  sodium and potassium out of the cell. 
E)  potassium ions out of and sodium ions into the cell.

Question 15

Complex organisms tend to have a nervous system with sense organs concentrated in the head.

Accepted Answer

The answer of Complex organisms tend to have a nervous...

Question 16

If a bone fragment resulting from a broken nose pushed against the olfactory (smell) nerve, triggering an action potential, the person would

Accepted Answer

A)  register the sensation as a smell. 
B)  lose her sense of smell. 
C)  register the sensation as a sound. 
D)  register the sensation as a visual stimulus. 
E)  not register the sensation at all. 
A)  register the sensation as a smell. 
B)  lose her sense of smell. 
C)  register the sensation as a sound. 
D)  register the sensation as a visual stimulus. 
E)  not register the sensation at all.

Question 17

The concentrations of ions inside and outside of a neuron are maintained by sodium- chloride (Na+- Cl-) pumps.

Accepted Answer

A) True 
 B)False

Question 18

The brain interprets the of light on the basis of the number and frequency of action potentials it receives from light receptors in the retina.

Accepted Answer

The answer of The brain interprets the of light on...

Question 19

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 20

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

Exam 39: The Nervous System

-Identify the numbered region in the above graph that indicates the action potential.

-What part of the neuron is labeled "Section 1"?

Sensory information processing as well as the direction of voluntary movements are carried out by the

A diffuse nerve net would be found in which of the following animals?

Motor neurons

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.

The more complex the organism, the more likely it is to have nerve net.

Nerves are groups of axons bundled together.

Which of these neurotransmitters, released by neurons of the sympathetic nervous system, helps prepare the body for energetic activity?

It is possible that brain damage from a stroke or other injury could leave a person with the ability to comprehend written language but not spoken language (assume the person's hearing is fine). Which statement best explains this?

Which portion of the neuron typically receives information?

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

The left and right hemispheres of the brain are connected through the _, a large band of axons.

In an unstimulated neuron, the sodium- potassium pump maintains the concentration gradient of sodium and potassium ions by transporting

Complex organisms tend to have a nervous system with sense organs concentrated in the head.

If a bone fragment resulting from a broken nose pushed against the olfactory (smell) nerve, triggering an action potential, the person would

The concentrations of ions inside and outside of a neuron are maintained by sodium- chloride (Na+- Cl-) pumps.

The brain interprets the of light on the basis of the number and frequency of action potentials it receives from light receptors in the retina.

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

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

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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