Question 1

Figure 13-1 The Spinal Cord
Use Figure 13-1 to answer the following questions:
-What is the function of the structure labeled "12"?

Accepted Answer

A)  control of skeletal muscle
B)  somatic sensory receiving
C)  visceral sensory receiving
D)  control of visceral effectors
E)  ascending pathwayF) B) and C)
G) B) and D)

Question 2

Figure 13-2 Spinal Nerves
Use Figure 13-2 to answer the following questions:
-Identify the structure labeled "8."

Accepted Answer

A)  peripheral nerve
B)  dorsal ramus
C)  spinal nerve
D)  ventral root
E)  dorsal rootF) A) and D)
G) All of the above

Question 3

The layer of connective tissue that surrounds individual axons within a peripheral nerve is termed the

Accepted Answer

A)  endoneurium.
B)  perineurium.
C)  aponeurium.
D)  metaneurium.
E)  subneurium.F) D) and E)
G) A) and B)

Question 4

The ventral rami of spinal nerves C5 to T1 contribute fibers to the ________ plexus.

Accepted Answer

A)  cervical
B)  brachial
C)  lumbar
D)  sacral
E)  thoracicF) C) and D)
G) A) and B)

Question 5

A(n)________ reflex has at least one interneuron placed between the sensory and motor neurons.

Accepted Answer

The answer of A(n)________ reflex has at least one interneuron...

Question 6

The outward projections from the central gray matter of the spinal cord are called

Accepted Answer

A)  wings.
B)  horns.
C)  pyramids.
D)  fibers.
E)  tracts.F) All of the above
G) B) and E)

Question 7

The dorsal root of a spinal nerve contains

Accepted Answer

A)  axons of motor neurons.
B)  axons of sensory neurons.
C)  cell bodies of motor neurons.
D)  cell bodies of sensory neurons.
E)  interneurons.F) D) and E)
G) A) and C)

Question 8

Figure 13-1 The Spinal Cord
Use Figure 13-1 to answer the following questions:
-Identify the structure labeled "4."

Accepted Answer

A)  posterior gray column
B)  dorsal gray ganglion
C)  posterior white column
D)  posterior gray horn
E)  anterior gray hornF) A) and B)
G) A) and E)

Question 9

Figure 13-2 Spinal Nerves
Use Figure 13-2 to answer the following questions:
-Identify the structure labeled "4."

Accepted Answer

A)  spinal nerve
B)  gray ramus
C)  white ramus
D)  dorsal ramus
E)  ventral ramusF) A) and E)
G) A) and B)

Question 10

The outermost connective-tissue covering of nerves is the

Accepted Answer

A)  endoneurium.
B)  endomysium.
C)  perineurium.
D)  epineurium.
E)  epimysium.F) A) and E)
G) D) and E)

Question 11

________ reflexes activate skeletal muscles.(Note: Be sure to capitalize the first letter of your answer).

Accepted Answer

The answer of ________ reflexes activate skeletal muscles.(Note: Be sure...

Question 12

Sometimes,when it is difficult to initiate a knee-jerk reflex by tapping the patellar tendon,a patient will be asked to voluntarily make a fist.Then the reflex will be easily evoked.What does this illustrate about the relation between voluntary and involuntary reflex movement?

Accepted Answer

Descending motor tracts that excite the ...

Question 13

The ________ separates the dura mater from the walls of the vertebral canal.

Accepted Answer

The answer of The ________ separates the dura mater from...

Question 14

The white matter of the spinal cord is mainly

Accepted Answer

A)  unmyelinated axons.
B)  neuroglia.
C)  Schwann cells.
D)  myelinated and unmyelinated axons.
E)  nodes of Ranvier.F) A) and D)
G) C) and D)

Question 15

Figure 13-1 The Spinal Cord
Use Figure 13-1 to answer the following questions:
-Identify the structure labeled "1."

Accepted Answer

A)  anterior white column
B)  lateral white column
C)  lateral white horn
D)  median commissure
E)  posterior white columnF) C) and D)
G) A) and B)

Question 16

The ventral root of a spinal nerve contains

Accepted Answer

A)  axons of motor neurons.
B)  axons of sensory neurons.
C)  cell bodies of motor neurons.
D)  cell bodies of sensory neurons.
E)  interneurons.F) B) and D)
G) A) and D)

Question 17

Figure 13-2 Spinal Nerves
Use Figure 13-2 to answer the following questions:
-What is the function of the structure labeled "13"?

Accepted Answer

A)  sensory receptor for pain
B)  visceral sensory input
C)  somatic motor control
D)  somatic sensory input
E)  visceral motor controlF) B) and E)
G) C) and D)

Question 18

The spinal cord continues to elongate until about age

Accepted Answer

A)  20 years.
B)  10 years.
C)  4 years.
D)  6 months.
E)  2 months.F) C) and E)
G) A) and E)

Question 19

Spinal interneurons inhibit antagonist motor neurons in a process called

Accepted Answer

A)  a crossed extensor reflex.
B)  a stretch reflex.
C)  a tendon reflex.
D)  reciprocal inhibition.
E)  reverberating circuits.F) A) and B)
G) C) and E)

Question 20

A viral disease that destroys the cells of the anterior gray horn will

Accepted Answer

A)  lead to skeletal muscle weakness or paralysis.
B)  interfere with position sense.
C)  mainly interfere with crude touch and temperature sense.
D)  block autonomic regulation.
E)  affect visceral motor function.F) B) and C)
G) D) and E)

Exam 13: The Spinal Cord, spinal Nerves, and Spinal Reflexes

Figure 13-1 The Spinal Cord Use Figure 13-1 to answer the following questions: -Identify the structure labeled "4."

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Figure 13-1 The Spinal Cord Use Figure 13-1 to answer the following questions: -What is the function of the structure labeled "12"?

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A(n)________ reflex has at least one interneuron placed between the sensory and motor neurons.

Correct AnswerverifiedShow Answer

The ventral root of a spinal nerve contains

Correct AnswerverifiedShow Answer

Sometimes,when it is difficult to initiate a knee-jerk reflex by tapping the patellar tendon,a patient will be asked to voluntarily make a fist.Then the reflex will be easily evoked.What does this illustrate about the relation between voluntary and involuntary reflex movement?

Correct AnswerverifiedDescending motor tracts that excite the ...View AnswerShow Answer

The ________ separates the dura mater from the walls of the vertebral canal.

Correct AnswerverifiedShow Answer

A viral disease that destroys the cells of the anterior gray horn will

Correct AnswerverifiedShow Answer

________ reflexes activate skeletal muscles.(Note: Be sure to capitalize the first letter of your answer).

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The spinal cord continues to elongate until about age

Correct AnswerverifiedShow Answer

The layer of connective tissue that surrounds individual axons within a peripheral nerve is termed the

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The outward projections from the central gray matter of the spinal cord are called

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The ventral rami of spinal nerves C5 to T1 contribute fibers to the ________ plexus.

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Figure 13-1 The Spinal Cord Use Figure 13-1 to answer the following questions: -Identify the structure labeled "1."

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Figure 13-2 Spinal Nerves Use Figure 13-2 to answer the following questions: -Identify the structure labeled "8."

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Figure 13-2 Spinal Nerves Use Figure 13-2 to answer the following questions: -Identify the structure labeled "4."

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Spinal interneurons inhibit antagonist motor neurons in a process called

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The dorsal root of a spinal nerve contains

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The outermost connective-tissue covering of nerves is the

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Figure 13-2 Spinal Nerves Use Figure 13-2 to answer the following questions: -What is the function of the structure labeled "13"?

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The white matter of the spinal cord is mainly

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Descending motor tracts that excite the ...
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