Question 1

A neuron that has as its primary function the job of connecting other neurons is called a(n) 
)

Accepted Answer

A)   afferent neuron
B)   glial cell
C)   association neuron
D)   efferent neuronE) A) and D)
F) All of the above

Question 2

The all- or- none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place.

Accepted Answer

A) True 
 B)False

Question 3

Enkephalins and endorphins are peptides that act like morphine.

Accepted Answer

A) True 
 B)False

Question 4

Immediately after an action potential has peaked, which cellular gates open?

Accepted Answer

A)   calcium
B)   chloride
C)   potassium
D)   sodiumE) B) and D)
F) All of the above

Question 5

Which of the following describes the nervous system integrative function?

Accepted Answer

A)   senses changes in the environment
B)   responds to stimuli by gland secretion or muscle contraction
C)   analyzes sensory information, stores information, makes decisionsD) A) and B)
E) A) and C)

Question 6

Nerve cell adhesion molecules (N- CAMs)  .

Accepted Answer

A)   release nerve growth factor
B)   are crucial for the development of neural connections
C)   are found on "pathfinder" neurons
D)   are crucial in the production of neurotransmittersE) None of the above
F) B) and C)

Question 7

Cell bodies of sensory neurons may be located in ganglia lying outside the central nervous system.

Accepted Answer

A) True 
 B)False

Question 8

Figure 11.2Using Figure 11.2, match the following:
-When one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single EPSP; this event is called summation.

Accepted Answer

The answer of  Figure 11.2Using Figure 11.2, match the...

Question 9

Define synaptic delay.

Accepted Answer

Synaptic delay reflects the ti...

Question 10

Schwann cells are functionally similar to .

Accepted Answer

A)   ependymal cells
B)   oligodendrocytes
C)   microglia
D)   astrocytesE) C) and D)
F) All of the above

Question 11

Figure 11.1Using Figure 11.1, match the following:
-That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the nervous system.

Accepted Answer

The answer of  Figure 11.1Using Figure 11.1, match the...

Question 12

What does the central nervous system use to determine the strength of a stimulus?

Accepted Answer

A)   type of stimulus receptor
B)   origin of the stimulus
C)   frequency of action potentials
D)   size of action potentialsE) A) and D)
F) B) and C)

Question 13

Figure 11.2Using Figure 11.2, match the following:
-Synaptic vesicles.

Accepted Answer

The answer of  Figure 11.2Using Figure 11.2, match the...

Question 14

Which of the following correctly describes a graded potential?

Accepted Answer

A)   amplitude of various sizes
B)   long distance signaling
C)   voltage stimulus to initiate
D)   voltage regulated repolarizationE) A) and B)
F) A) and C)

Question 15

Some neurotransmitters can be either excitatory or inhibitory depending upon the receptor.

Accepted Answer

A) True 
 B)False

Question 16

Why does a hyperpolarization phase generally follow a repolarization phase in an action potential?

Accepted Answer

Immediately after an action potential th...

Question 17

Which of the following is not true of graded potentials?

Accepted Answer

A)   They increase amplitude as they move away from the stimulus point.
B)   They can be called postsynaptic potentials.
C)   They are short- lived.
D)   They can form on receptor endings.E) None of the above
F) C) and D)

Question 18

What mechanism is responsible for axonal transport?

Accepted Answer

ATP- dependent "motor" protein...

Question 19

A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons.

Accepted Answer

A) True 
 B)False

Question 20

What is the role of acetylcholinesterase?

Accepted Answer

A)   stimulate the production of acetylcholine
B)   destroy ACh a brief period after its release by the axon endings
C)   act as a transmitting agent
D)   amplify or enhance the effect of AChE) None of the above
F) B) and D)

Exam 11: Fundamentals of the Nervous System and Nervous Tissue

What does the central nervous system use to determine the strength of a stimulus?

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Enkephalins and endorphins are peptides that act like morphine.

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Which of the following describes the nervous system integrative function?

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Which of the following correctly describes a graded potential?

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Why does a hyperpolarization phase generally follow a repolarization phase in an action potential?

Correct AnswerverifiedImmediately after an action potential th...View AnswerShow Answer

A neuron that has as its primary function the job of connecting other neurons is called a(n) )

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A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons.

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Which of the following is not true of graded potentials?

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Figure 11.1Using Figure 11.1, match the following: -That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the nervous system.

Correct AnswerverifiedShow Answer

Immediately after an action potential has peaked, which cellular gates open?

Correct AnswerverifiedShow Answer

The all- or- none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place.

Correct AnswerverifiedShow Answer

Schwann cells are functionally similar to .

Correct AnswerverifiedShow Answer

Figure 11.2Using Figure 11.2, match the following: -Synaptic vesicles.

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Some neurotransmitters can be either excitatory or inhibitory depending upon the receptor.

Correct AnswerverifiedShow Answer

What mechanism is responsible for axonal transport?

Correct AnswerverifiedATP- dependent "motor" protein...View AnswerShow Answer

Nerve cell adhesion molecules (N- CAMs) .

Correct AnswerverifiedShow Answer

What is the role of acetylcholinesterase?

Correct AnswerverifiedShow Answer

Define synaptic delay.

Correct AnswerverifiedSynaptic delay reflects the ti...View AnswerShow Answer

Figure 11.2Using Figure 11.2, match the following: -When one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single EPSP; this event is called summation.

Correct AnswerverifiedShow Answer

Cell bodies of sensory neurons may be located in ganglia lying outside the central nervous system.

Correct AnswerverifiedShow Answer

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Immediately after an action potential th...
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Correct Answer
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ATP- dependent "motor" protein...
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Correct Answer
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Correct Answer
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Synaptic delay reflects the ti...
View Answer

Correct Answer
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Correct Answer
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