Question 1

An animal with a simple net-like nervous system is the

Accepted Answer

A)   earthworm.
B)   dog.
C)   cnidarian hydra.
D)   molluscan octopus.
E)   flatworm.F) B) and C)
G) A) and E)

Question 2

The brain of early fishes consisted of three principal regions called

Accepted Answer

A)   pons, cerebellum, cerebrum.
B)   prosencephalon, mesencephalon, and rhombencephalon.
C)   protoganglia, mesoganglia, and metaganglia.
D)   ichthyospinal region, ichthyocerebrum, and ichthyocerebellum.
E)   premedulla, medulla oblongata, and postmedulla.F) C) and E)
G) A) and D)

Question 3

The active transport device whereby sodium is moved from inside the axon to the outside is referred to as the ______ ______.

Accepted Answer

The answer of The active transport device whereby sodium is...

Question 4

If you were placed in a space suit and drifted away from your spacecraft,which stimuli would be unable to reach you?

Accepted Answer

If you were placed in a space suit and d...

Question 5

The arthropod compound eye is composed of numerous independent visual units called _________.

Accepted Answer

The answer of The arthropod compound eye is composed of...

Question 6

Insects possess chemoreceptors that are located in sensory hairs called __________________.

Accepted Answer

The answer of Insects possess chemoreceptors that are located in...

Question 7

The most common neurotransmitter at synapses in the vertebrate nervous system is __________.

Accepted Answer

The answer of The most common neurotransmitter at synapses in...

Question 8

The autonomic nervous system consists of two subdivisions,the _________ and the parasympathetic.

Accepted Answer

The answer of The autonomic nervous system consists of two...

Question 9

The evolutionary trend toward larger size and capacity of the brain in vertebrates is called

Accepted Answer

A)   cranial expansion.
B)   cortex evolution.
C)   cephalization.
D)   centralization.
E)   encephalization.F) C) and E)
G) B) and D)

Question 10

What is the difference between a reflex arc and a reflex act? List the components and functions of each.

Accepted Answer

A reflex arc and a reflex act are both p...

Question 11

In a chemical synapse,when the wave of depolarization reaches the presynaptic membrane,it triggers the release of

Accepted Answer

A)   sodium ions.
B)   neurotransmitter molecules.
C)   electricity.
D)   nerve action potentials.
E)   None of the choices are correct.F) D) and E)
G) A) and B)

Question 12

The organ of hearing in the inner ear of tetrapod vertebrates is the ______ ___ ______.

Accepted Answer

The answer of The organ of hearing in the inner...

Question 13

Which statement is NOT true about the cells of the nervous system?

Accepted Answer

A)   A dendrite is a cytoplasmic extension of a neuron
B)   There may be multiple dendrites on a single cell
C)   A neuroglial cell supports or protects a neuron
D)   A neuron typically has only one axon
E)   All of the above are correct statementsF) A) and B)
G) C) and D)

Question 14

Which of the following wraps the spinal canal in three layers?

Accepted Answer

A)   White matter
B)   Black matter
C)   Meninges
D)   Yellow matter or corpus amarillo
E)   None of the choices are correctF) B) and D)
G) C) and D)

Question 15

Discuss what is meant by "action potential" - be sure to discuss the properties of self-propagation,depolarization,and repolarization.

Accepted Answer

An action potential is a brief electrica...

Question 16

What roles do acetylcholine and acetylcholinesterase play in the transmission of neural action potentials?

Accepted Answer

Acetylcholine (ACh) and acetylcholineste...

Question 17

The ultimate limitation to the number of nerve action potentials we can send to a muscle per second is

Accepted Answer

A)   the speed with which sodium ions can be pumped back outside the nerve membrane.
B)   the strength of the nerve action potential.
C)   whether action potential is detected as being pain, sound, or some other sense.
D)   the number of neurons and synapses involved.
E)   the type of muscle.F) D) and E)
G) None of the above

Question 18

The extension of a nerve cell that generally carries action potentials away from the cell body is the

Accepted Answer

A)   axon.
B)   schwann cells.
C)   synapse.
D)   dendrite.
E)   myelin.F) B) and E)
G) A) and B)

Question 19

Pacinian corpuscles adjusting to new shapes,no longer responding to constant pressure,is a condition called

Accepted Answer

A)   adaptation.
B)   fatigue.
C)   timbre.
D)   inhibition.
E)   redundancy.F) D) and E)
G) A) and C)

Question 20

The myelin sheath that insulates the axon is formed by special glial cells called ______ ______.

Accepted Answer

The answer of The myelin sheath that insulates the axon...

Exam 33: Nervous Coordination: Nervous System and Sense Organs

Insects possess chemoreceptors that are located in sensory hairs called __________________.

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The myelin sheath that insulates the axon is formed by special glial cells called ______ ______.

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What is the difference between a reflex arc and a reflex act? List the components and functions of each.

Correct AnswerAnswered by ExamLex AIA reflex arc and a reflex act are both p...View AnswerShow Answer

The arthropod compound eye is composed of numerous independent visual units called _________.

Correct AnswerverifiedShow Answer

If you were placed in a space suit and drifted away from your spacecraft,which stimuli would be unable to reach you?

Correct AnswerAnswered by ExamLex AIIf you were placed in a space suit and d...View AnswerShow Answer

An animal with a simple net-like nervous system is the

Correct AnswerverifiedShow Answer

What roles do acetylcholine and acetylcholinesterase play in the transmission of neural action potentials?

Correct AnswerAnswered by ExamLex AIAcetylcholine (ACh) and acetylcholineste...View AnswerShow Answer

The active transport device whereby sodium is moved from inside the axon to the outside is referred to as the ______ ______.

Correct AnswerverifiedShow Answer

The evolutionary trend toward larger size and capacity of the brain in vertebrates is called

Correct AnswerverifiedShow Answer

The brain of early fishes consisted of three principal regions called

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The autonomic nervous system consists of two subdivisions,the _________ and the parasympathetic.

Correct AnswerverifiedShow Answer

The ultimate limitation to the number of nerve action potentials we can send to a muscle per second is

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Which of the following wraps the spinal canal in three layers?

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The extension of a nerve cell that generally carries action potentials away from the cell body is the

Correct AnswerverifiedShow Answer

Pacinian corpuscles adjusting to new shapes,no longer responding to constant pressure,is a condition called

Correct AnswerverifiedShow Answer

Discuss what is meant by "action potential" - be sure to discuss the properties of self-propagation,depolarization,and repolarization.

Correct AnswerAnswered by ExamLex AIAn action potential is a brief electrica...View AnswerShow Answer

Which statement is NOT true about the cells of the nervous system?

Correct AnswerverifiedShow Answer

In a chemical synapse,when the wave of depolarization reaches the presynaptic membrane,it triggers the release of

Correct AnswerverifiedShow Answer

The organ of hearing in the inner ear of tetrapod vertebrates is the ______ ___ ______.

Correct AnswerverifiedShow Answer

The most common neurotransmitter at synapses in the vertebrate nervous system is __________.

Correct AnswerverifiedShow Answer

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The myelin sheath that insulates the axon is formed by special glial cells called .

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A reflex arc and a reflex act are both p...
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If you were placed in a space suit and d...
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Acetylcholine (ACh) and acetylcholineste...
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The active transport device whereby sodium is moved from inside the axon to the outside is referred to as the .

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An action potential is a brief electrica...
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The organ of hearing in the inner ear of tetrapod vertebrates is the ____ _ ______.

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