Question 1

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

Accepted Answer

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

Question 2

Sensations of fear, pleasure, and sexual arousal are produced by the__________ .

Accepted Answer

The answer of Sensations of fear, pleasure, and sexual arousal...

Question 3

A good meal and a pleasant evening relaxing in front of the fire trigger the parasympathetic nervous system.

Accepted Answer

A) True 
 B)False

Question 4

In an unstimulated neuron, the___________ concentration is higher inside the cell than outside.

Accepted Answer

A)  Cl? 
B)  Li+ 
C)  Na+ 
D)  Ca2+ 
E)  K+ 
A)  Cl? 
B)  Li+ 
C)  Na+ 
D)  Ca2+ 
E)  K+

Question 5

Nerves are groups of axons bundled together.

Accepted Answer

A) True 
 B)False

Question 6

All sensory information, with the exception of olfaction, must pass though the__________as it travels to the cerebral cortex.

Accepted Answer

A)  reticular formation 
B)  hypothalamus 
C)  thalamus 
D)  amygdala 
E)  cerebellum 
A)  reticular formation 
B)  hypothalamus 
C)  thalamus 
D)  amygdala 
E)  cerebellum

Question 7

Individuals with viral hemorrhagic fever lose the ability to regulate their K+ levels. Why does this condition create neurological problems?

Accepted Answer

Potassium plays a major role i

Question 8

The intensity of a stimulus is indicated by the __________of action potentials.

Accepted Answer

A)  intensity 
B)  speed 
C)  loss 
D)  frequency 
E)  duration 
A)  intensity 
B)  speed 
C)  loss 
D)  frequency 
E)  duration

Question 9

The junction across which electrical signals are passed from a neuron to a muscle fiber, a gland, or another neuron is called the

Accepted Answer

A)  axon. 
B)  glia. 
C)  synapse. 
D)  dendrite. 
E)  soma. 
A)  axon. 
B)  glia. 
C)  synapse. 
D)  dendrite. 
E)  soma.

Question 10

Neurons receive, process, and transmit information; however, they cannot function without glia. What are glia, and how do they affect neuronal functioning?

Accepted Answer

Glia are nervous system cells that provi

Question 11

Electrical signals are transmitted to the synaptic terminals along the

Accepted Answer

A)  glia. 
B)  synapse. 
C)  dendrite. 
D)  cell body. 
E)  axon. 
A)  glia. 
B)  synapse. 
C)  dendrite. 
D)  cell body. 
E)  axon.

Question 12

Individuals using drugs such as cocaine over extended periods of time find that they need increasing amounts just to feel okay. Why?

Accepted Answer

Drugs such as cocaine reduce t

Question 13

A neuronʹs resting potential is due in large part to the diffusion of K+ ions out of the cell, leaving the negatively charged DNA and proteins inside the cell.

Accepted Answer

A) True 
 B)False

Question 14

Motor neurons

Accepted Answer

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

Question 15

What happens when the resting potential reaches threshold voltage?

Accepted Answer

A)  Voltage-gated sodium channels close. 
B)  Voltage-gated potassium channels open. 
C)  Voltage-gated sodium channels open. 
D)  The sodium-potassium pump is turned on. 
E)  Resting potassium channels close. 
A)  Voltage-gated sodium channels close. 
B)  Voltage-gated potassium channels open. 
C)  Voltage-gated sodium channels open. 
D)  The sodium-potassium pump is turned on. 
E)  Resting potassium channels close.

Question 16

How are the sympathetic and parasympathetic nervous systems similar?

Accepted Answer

They control involuntary actions and inn

Question 17

-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

Question 18

The brain is able to take sensory inputs from many neurons, integrate them, and determine an appropriate response.

Accepted Answer

A) True 
 B)False

Question 19

Why do negatively charged molecules tend to remain inside both an unstimulated and stimulated neuron?

Accepted Answer

Most negatively charged molecu

Question 20

Explain why most adults do not have to think about how to walk even though they did when they were toddlers.

Accepted Answer

All the neurons and connection

Exam 39: The Nervous System

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

Sensations of fear, pleasure, and sexual arousal are produced by the__________ .

A good meal and a pleasant evening relaxing in front of the fire trigger the parasympathetic nervous system.

In an unstimulated neuron, the___________ concentration is higher inside the cell than outside.

Nerves are groups of axons bundled together.

All sensory information, with the exception of olfaction, must pass though the__________as it travels to the cerebral cortex.

Individuals with viral hemorrhagic fever lose the ability to regulate their K+ levels. Why does this condition create neurological problems?

The intensity of a stimulus is indicated by the __________of action potentials.

The junction across which electrical signals are passed from a neuron to a muscle fiber, a gland, or another neuron is called the

Neurons receive, process, and transmit information; however, they cannot function without glia. What are glia, and how do they affect neuronal functioning?

Electrical signals are transmitted to the synaptic terminals along the

Individuals using drugs such as cocaine over extended periods of time find that they need increasing amounts just to feel okay. Why?

A neuronʹs resting potential is due in large part to the diffusion of K+ ions out of the cell, leaving the negatively charged DNA and proteins inside the cell.

Motor neurons

What happens when the resting potential reaches threshold voltage?

How are the sympathetic and parasympathetic nervous systems similar?

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

The brain is able to take sensory inputs from many neurons, integrate them, and determine an appropriate response.

Why do negatively charged molecules tend to remain inside both an unstimulated and stimulated neuron?

Explain why most adults do not have to think about how to walk even though they did when they were toddlers.

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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