Question 1

Which of the following is the correct arrangement of a reflex arc?

Accepted Answer

A)   receptor, sensory neuron, integration center, motor neuron, effector
B)   effector, sensory neuron, integration center, motor neuron, receptor
C)   receptor, motor neuron, integration center, effector, sensory neuron
D)   integration center, receptor, sensory neuron, motor neuron, effectorE) All of the above
F) C) and D)

Question 2

Nearly all somatic sensory neurons are of this type, based on the classification of the type and number of processes.

Accepted Answer

The answer of Nearly all somatic sensory neurons are of...

Question 3

This tends to be the longest cytoplasmic projection from a neuron.

Accepted Answer

A)   synapse
B)   axon terminal
C)   axon
D)   cell body
E)   dendriteF) C) and E)
G) A) and B)

Question 4

Which of the following statements concerning sensory neurons is incorrect?

Accepted Answer

A)   They have peripheral and central processes.
B)   Most have their cell bodies in ganglia outside the CNS.
C)   Most are pseudounipolar.
D)   They contain only dendrites.E) B) and C)
F) C) and D)

Question 5

These regions of the neuron direct electrical currents toward the cell body.

Accepted Answer

A)   synapse
B)   axon terminal
C)   axon
D)   cell body
E)   dendriteF) A) and D)
G) B) and E)

Question 6

This region of the neuron contains a single nucleus surrounded by cytoplasm.

Accepted Answer

A)   synapse
B)   axon terminal
C)   axon
D)   cell body
E)   dendriteF) A) and B)
G) A) and C)

Question 7

Figure 12.1
Use the diagram pictured above to answer the following questions.
-Identify the letter that indicates a Schwann cell.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) A) and B)
G) A) and C)

Question 8

Figure 12.1
Use the diagram pictured above to answer the following questions.
-Identify the letter that indicates the region of a neuron with a name that means ʺlittle hill.ʺ

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) B) and E)
G) C) and E)

Question 9

The complexity of the CNS can be attributed to

Accepted Answer

A)   the large number of sensory neurons carrying information to the CNS.
B)   the large number of motor neurons leaving the CNS.
C)   the different types of receptors outside the CNS.
D)   the large number of interneurons in the CNS.E) B) and C)
F) A) and D)

Question 10

The of a presynaptic neuron associates with the dendrite of a postsynaptic neuron.

Accepted Answer

A)   synapse
B)   axon terminal
C)   axon
D)   cell body
E)   dendriteF) A) and C)
G) B) and E)

Question 11

During embryo development, neurons that make ʺbadʺ connections

Accepted Answer

A)   are turned off by inhibitory synapses in reverberating circuits.
B)   die by apoptosis.
C)   develop collaterals that seek out appropriate target cells.
D)   are inhibited by chemicals released from astrocytes.E) B) and D)
F) B) and C) B

Question 12

Myelin on axons functions to

Accepted Answer

A)   store nutrients (fat)  for use by the neurons.
B)   speed the rate of impulse conduction and insulate neighboring axons from one another.
C)   cover nodes of Ranvier.
D)   make the axons live longer.E) C) and D)
F) B) and C)

Question 13

A man walking barefoot stepped on a piece of glass. His foot jerked upward in which type of reflex?

Accepted Answer

A)   somatic, polysynaptic withdrawal reflex
B)   visceral, polysynaptic withdrawal reflex
C)   somatic, monosynaptic withdrawal reflex
D)   visceral, monosynaptic stretch reflexE) B) and C)
F) A) and B)

Question 14

All of the following are characteristics of dendrites except that they

Accepted Answer

A)   typically occur as more than one per cell.
B)   are more extensive branching than axons.
C)   always conduct action potentials.
D)   conduct signals toward the cell body.E) A) and B)
F) All of the above C

Question 15

Figure 12.2
Use the diagrams above to answer the following questions.
-Identify which letter represents an oligodendrocyte.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) A) and E)
G) A) and B)

Question 16

A somatic motor neuron carries

Accepted Answer

A)   motor commands to the skeletal musculature.
B)   information from the skin to the CNS.
C)   information, such as pain, from the viscera in the ventral cavity to the CNS.
D)   information that signals muscle contraction in the organs in the ventral cavity.E) A) and B)
F) C) and D)

Question 17

Figure 12.2
Use the diagrams above to answer the following questions.
-Identify which diagram represents cells that produce and circulate cerebrospinal fluid.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) A) and B)
G) A) and C) D

Question 18

is a progressive disease that destroys patches of myelin in both the brain and spinal cord.

Accepted Answer

Multiple s...

Question 19

Most tumors in the brain originate from

Accepted Answer

A)   glial cells.
B)   bipolar neurons.
C)   multipolar neurons.
D)   unipolar neurons.E) B) and C)
F) B) and D)

Question 20

are chemicals that control the growth of newly forming neurons.)

Accepted Answer

The answer of are chemicals that control the growth of...

Exam 12: Fundamentals of the Nervous System and Nervous Tissue

Which of the following is the correct arrangement of a reflex arc?

Correct AnswerverifiedShow Answer

Nearly all somatic sensory neurons are of this type, based on the classification of the type and number of processes.

Correct AnswerverifiedShow Answer

This tends to be the longest cytoplasmic projection from a neuron.

Correct AnswerverifiedShow Answer

Which of the following statements concerning sensory neurons is incorrect?

Correct AnswerverifiedShow Answer

These regions of the neuron direct electrical currents toward the cell body.

Correct AnswerverifiedShow Answer

This region of the neuron contains a single nucleus surrounded by cytoplasm.

Correct AnswerverifiedShow Answer

Figure 12.1 Use the diagram pictured above to answer the following questions. -Identify the letter that indicates a Schwann cell.

Correct AnswerverifiedShow Answer

Figure 12.1 Use the diagram pictured above to answer the following questions. -Identify the letter that indicates the region of a neuron with a name that means ʺlittle hill.ʺ

Correct AnswerverifiedShow Answer

The complexity of the CNS can be attributed to

Correct AnswerverifiedShow Answer

The of a presynaptic neuron associates with the dendrite of a postsynaptic neuron.

Correct AnswerverifiedShow Answer

During embryo development, neurons that make ʺbadʺ connections

Correct AnswerverifiedB

Myelin on axons functions to

Correct AnswerverifiedShow Answer

A man walking barefoot stepped on a piece of glass. His foot jerked upward in which type of reflex?

Correct AnswerverifiedShow Answer

All of the following are characteristics of dendrites except that they

Correct AnswerverifiedC

Figure 12.2 Use the diagrams above to answer the following questions. -Identify which letter represents an oligodendrocyte.

Correct AnswerverifiedShow Answer

A somatic motor neuron carries

Correct AnswerverifiedShow Answer

Figure 12.2 Use the diagrams above to answer the following questions. -Identify which diagram represents cells that produce and circulate cerebrospinal fluid.

Correct AnswerverifiedD

is a progressive disease that destroys patches of myelin in both the brain and spinal cord.

Correct AnswerverifiedMultiple s...View AnswerShow Answer

Most tumors in the brain originate from

Correct AnswerverifiedShow Answer

are chemicals that control the growth of newly forming neurons.)

Correct AnswerverifiedShow Answer

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B

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C

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D

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Multiple s...
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