Question 1

Which of the following most accurately describes the cellular activity associated with the actual passage of a nerve impulse?

Accepted Answer

A) electrical discharge 
B) action of sodium-potassium pump 
C) wave of depolarization and repolarization 
D) hyperpolarization followed by rebalancing 
E) active transport of ions 
A) electrical discharge 
B) action of sodium-potassium pump 
C) wave of depolarization and repolarization 
D) hyperpolarization followed by rebalancing 
E) active transport of ions

Question 2

Conduction from node to node

Accepted Answer

A) occurs only in the central nervous system. 
B) is a rapid type of nerve conduction. 
C) occurs between nerves and muscles. 
D) involves the "jumping" of impulses. 
E) is a rapid type of nerve conduction and involves the "jumping" of impulses. 
A) occurs only in the central nervous system. 
B) is a rapid type of nerve conduction. 
C) occurs between nerves and muscles. 
D) involves the "jumping" of impulses. 
E) is a rapid type of nerve conduction and involves the "jumping" of impulses.

Question 3

A chemical substance that behaves as a natural analgesic is

Accepted Answer

A) an amphetamine. 
B) LSD. 
C) epinephrine. 
D) an endorphin. 
E) none of these. 
A) an amphetamine. 
B) LSD. 
C) epinephrine. 
D) an endorphin. 
E) none of these.

Question 4

Which of the following is mismatched?

Accepted Answer

A) acetylcholine; muscle contraction 
B) endorphin; pain perception 
C) norepinephrine; fight-or-flight response 
D) serotonin; sexual function 
E) GABA; major inhibitor in the brain 
A) acetylcholine; muscle contraction 
B) endorphin; pain perception 
C) norepinephrine; fight-or-flight response 
D) serotonin; sexual function 
E) GABA; major inhibitor in the brain

Question 5

Active transport

Accepted Answer

A) helps establish the resting potential of a neuron. 
B) counters the process of diffusion. 
C) allows transport of ions across the plasma membrane of the neuron against the concentration gradient. 
D) helps establish the resting potential of a neuron and counters the process of diffusion. 
E) does all of these. 
A) helps establish the resting potential of a neuron. 
B) counters the process of diffusion. 
C) allows transport of ions across the plasma membrane of the neuron against the concentration gradient. 
D) helps establish the resting potential of a neuron and counters the process of diffusion. 
E) does all of these.

Question 6

Destruction of the motor areas in the left cerebral cortex results in the loss of

Accepted Answer

A) sensation on the right side of the body. 
B) sensation on the left side of the body. 
C) voluntary movement on the left side of the body. 
D) voluntary movement on the right side of the body. 
E) involuntary control of the autonomic system. 
A) sensation on the right side of the body. 
B) sensation on the left side of the body. 
C) voluntary movement on the left side of the body. 
D) voluntary movement on the right side of the body. 
E) involuntary control of the autonomic system.

Question 7

Four of the five drugs listed below are analgesics.Select the exception.

Accepted Answer

A) endorphin 
B) opium 
C) heroin 
D) enkephalin 
E) Ecstasy 
A) endorphin 
B) opium 
C) heroin 
D) enkephalin 
E) Ecstasy

Question 8

To produce a split-brain individual, an operation would need to cut the

Accepted Answer

A) corpus callosum. 
B) reticular formation. 
C) hypothalamus. 
D) fissure of Rolando. 
E) pons. 
A) corpus callosum. 
B) reticular formation. 
C) hypothalamus. 
D) fissure of Rolando. 
E) pons.

Question 9

By definition, a nerve is

Accepted Answer

A) a bundle of sensory, motor, or both types of nerve fibers outside the central nervous system. 
B) a single extension of a neuron. 
C) the same as a neuron but within the central nervous system. 
D) a collection of nerve cell bodies outside the central nervous system. 
E) a fiber more than ten inches in length. 
A) a bundle of sensory, motor, or both types of nerve fibers outside the central nervous system. 
B) a single extension of a neuron. 
C) the same as a neuron but within the central nervous system. 
D) a collection of nerve cell bodies outside the central nervous system. 
E) a fiber more than ten inches in length.

Question 10

Light from the left half of the visual field

Accepted Answer

A) strikes receptors on the right side of the right retina. 
B) strikes receptors on the right side of the left retina. 
C) generates signals that are sent back to the right visual cortex. 
D) does all of these. 
E) does none of these. 
A) strikes receptors on the right side of the right retina. 
B) strikes receptors on the right side of the left retina. 
C) generates signals that are sent back to the right visual cortex. 
D) does all of these. 
E) does none of these.

Question 11

Neurons and other cells that produce action potentials are said to show

Accepted Answer

A) passive transport. 
B) saltatory conduction. 
C) excitability. 
D) capacitance. 
E) facilitated transport. 
A) passive transport. 
B) saltatory conduction. 
C) excitability. 
D) capacitance. 
E) facilitated transport.

Question 12

When a neuron is at rest

Accepted Answer

A) there is a voltage difference across the membrane of about 70 millivolts. 
B) the interior is negatively charged. 
C) it is not responding to a stimulus. 
D) the fluid outside the membrane has more sodium and less potassium than the cytoplasm. 
E) all of these occur. 
A) there is a voltage difference across the membrane of about 70 millivolts. 
B) the interior is negatively charged. 
C) it is not responding to a stimulus. 
D) the fluid outside the membrane has more sodium and less potassium than the cytoplasm. 
E) all of these occur.

Question 13

A nerve whose fibers conduct impulses only away from the central nervous system is

Accepted Answer

A) exclusively motor. 
B) exclusively sensory. 
C) motor or sensory depending on body location. 
D) a spinal nerve. 
E) a cranial nerve. 
A) exclusively motor. 
B) exclusively sensory. 
C) motor or sensory depending on body location. 
D) a spinal nerve. 
E) a cranial nerve.

Question 14

Which of the following is a junction between two neurons?

Accepted Answer

A) Schwann cell 
B) chemical synapse 
C) unsheathed node 
D) sodium gate 
E) all of these 
A) Schwann cell 
B) chemical synapse 
C) unsheathed node 
D) sodium gate 
E) all of these

Question 15

Which of the following statements is false?

Accepted Answer

A) Synapses are direct contacts between neurons. 
B) Both sensory and motor neurons use action potentials to transmit information. 
C) The hypothalamus acts as an endocrine gland. 
D) Sensory neurons carry impulses toward the central nervous system. 
E) Motor neurons carry impulses away from the central nervous system. 
A) Synapses are direct contacts between neurons. 
B) Both sensory and motor neurons use action potentials to transmit information. 
C) The hypothalamus acts as an endocrine gland. 
D) Sensory neurons carry impulses toward the central nervous system. 
E) Motor neurons carry impulses away from the central nervous system.

Question 16

The spaces that separate adjacent Schwann cells are

Accepted Answer

A) neuroglia. 
B) myelin sheaths. 
C) nodes. 
D) dendrites. 
E) synapses. 
A) neuroglia. 
B) myelin sheaths. 
C) nodes. 
D) dendrites. 
E) synapses.

Question 17

The operation of a synapse

Accepted Answer

A) results from the passage of an electrical charge across the gap. 
B) involves a transmitter substance from vesicles in the presynaptic neuron that act upon receptor sites on the postsynaptic neuron. 
C) occurs only between two nerves. 
D) is limited only by the action of acetylcholinesterase. 
E) involves transduction of the electrochemical energy of an action potential into mechanical energy of movement. 
A) results from the passage of an electrical charge across the gap. 
B) involves a transmitter substance from vesicles in the presynaptic neuron that act upon receptor sites on the postsynaptic neuron. 
C) occurs only between two nerves. 
D) is limited only by the action of acetylcholinesterase. 
E) involves transduction of the electrochemical energy of an action potential into mechanical energy of movement.

Question 18

Ethyl alcohol

Accepted Answer

A) is a depressant. 
B) produces an initial euphoria due to its effect on inhibitory synapses. 
C) crosses the blood-brain barrier. 
D) binds to many types of neurotransmitter receptors. 
E) includes all of these. 
A) is a depressant. 
B) produces an initial euphoria due to its effect on inhibitory synapses. 
C) crosses the blood-brain barrier. 
D) binds to many types of neurotransmitter receptors. 
E) includes all of these.

Question 19

Barbiturates are

Accepted Answer

A) depressants. 
B) stimulants. 
C) analgesics. 
D) hallucinogens. 
E) antipsychotics. 
A) depressants. 
B) stimulants. 
C) analgesics. 
D) hallucinogens. 
E) antipsychotics.

Question 20

Which of the following is NOT true concerning sensory neurons?

Accepted Answer

A) They detect changing conditions inside or outside the body. 
B) They lie in the pathway between the interneurons and motor neurons. 
C) They respond to stimuli such as light or odor. 
D) They relay information to integrators. 
E) They are one of three types of neurons. 
A) They detect changing conditions inside or outside the body. 
B) They lie in the pathway between the interneurons and motor neurons. 
C) They respond to stimuli such as light or odor. 
D) They relay information to integrators. 
E) They are one of three types of neurons.

Exam 33: Neural Control

Which of the following most accurately describes the cellular activity associated with the actual passage of a nerve impulse?

Conduction from node to node

A chemical substance that behaves as a natural analgesic is

Which of the following is mismatched?

Active transport

Destruction of the motor areas in the left cerebral cortex results in the loss of

Four of the five drugs listed below are analgesics.Select the exception.

To produce a split-brain individual, an operation would need to cut the

By definition, a nerve is

Light from the left half of the visual field

Neurons and other cells that produce action potentials are said to show

When a neuron is at rest

A nerve whose fibers conduct impulses only away from the central nervous system is

Which of the following is a junction between two neurons?

Which of the following statements is false?

The spaces that separate adjacent Schwann cells are

The operation of a synapse

Ethyl alcohol

Barbiturates are

Which of the following is NOT true concerning sensory neurons?

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

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