Question 1

List the major nerves of the sacral plexus.

Accepted Answer

A)  iliohypogastric,ilio-inguinal,and genitofemoral nerves
B)  lateral femoral cutaneous,femoral,and obturator nerves
C)  superior and inferior gluteal,posterior femoral cutaneous,sciatic,and pudendal nerves
D)  tibial,femoral,sural,saphenous,and fibular nerves
E)  long thoracic,thoracodorsal,saphenous,genitofemoral,and obturator nervesF) A) and D)
G) A) and B)

Question 2

Describe the composition of the gray matter of the spinal cord.

Accepted Answer

A)  myelinated axons
B)  cell bodies of neurons,neuroglia,and unmyelinated axons
C)  myelinated axons and unmyelinated axons
D)  neuroglia and spinal meninges
E)  spinal meningesF) C) and D)
G) A) and D)

Question 3

Which ramus carries sensory information from the limbs?

Accepted Answer

A)  anterior ramus
B)  posterior ramus
C)  medial ramus
D)  lateral ramus
E)  rami communicantesF) C) and D)
G) B) and C)

Question 4

Where does the simplest processing occur?

Accepted Answer

A)  cerebrum
B)  cerebellum
C)  brainstem
D)  PNS and the spinal cord
E)  corpus callosumF) All of the above
G) B) and E)

Question 5

All of the following are true of polysynaptic reflexesexceptthat they

Accepted Answer

A)  are arranged according to dermatomes.
B)  are intersegmental in distribution.
C)  involve reciprocal innervation.
D)  have reverberating circuits that prolong the reflexive motor response.
E)  involve pools of interneurons.F) A) and B)
G) None of the above

Question 6

Through which root of a spinal nerve does visceral sensory information arrive?

Accepted Answer

A)  anterior root
B)  posterior root
C)  anterior root if the sensory receptors are on the anterior portion of the body and posterior root if the sensory receptors are on the posterior surface of the body
D)  anterior root if the sensory receptors are superior to the spinal cord and posterior root if the sensory receptors are inferior to the spinal cord
E)  both anterior root and posterior root can receive visceral sensory informationF) B) and C)
G) D) and E)

Question 7

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the

Accepted Answer

A)  dura mater.
B)  arachnoid mater.
C)  epidural space.
D)  subarachnoid space.
E)  cerebral ventricles.F) B) and C)
G) A) and B)

Question 8

Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord.As a result,which of the following would you expect?

Accepted Answer

A)  loss of sensation in his torso
B)  inability to breathe
C)  problems with moving his arms
D)  uncontrollable sweating of his feet
E)  problems with moving his legsF) A) and E)
G) B) and C)

Question 9

During the procedure known as a spinal tap,a needle is inserted into the ________ in the inferior ________ region.

Accepted Answer

A)  epidural space; thoracic
B)  epidural space; lumbar
C)  epidural space; sacral
D)  subarachnoid space; thoracic
E)  subarachnoid space; lumbarF) A) and D)
G) C) and D)

Question 10

Which of the following describes the posterior root ganglion?

Accepted Answer

A)  contains axons of motor neurons
B)  contains axons of sensory neurons
C)  contains cell bodies of motor neurons
D)  contains cell bodies of sensory neurons
E)  contains interneuronsF) All of the above
G) A) and C)

Question 11

What is a reflex?

Accepted Answer

A)  A reflex is a slow,calculated action triggered by a single exposure to specific stimuli.
B)  A reflex is a slow,calculated action triggered by repeated exposure to specific stimuli.
C)  A reflex is a slow,calculated action involving input from the brain triggered by specific stimuli.
D)  A reflex is when sensory inputs are sent quickly to the brain for analysis before any response occurs.
E)  A reflex is a rapid,automatic response triggered by specific stimuli.F) A) and E)
G) A) and D)

Question 12

In the patellar reflex,identify the response observed and the effectors involved.

Accepted Answer

A)  arm flexion and the effector is the biceps brachii
B)  arm extension and the effector is the triceps brachii
C)  leg flexion and the effectors are the hamstrings
D)  leg flexion and the effectors are the quadriceps femoris
E)  leg extension and the effectors are the quadriceps femorisF) A) and B)
G) B) and C)

Question 13

Which spinal nerves are not part of a nerve plexus?

Accepted Answer

A)  T1-T12
B)  C1-C2
C)  T2-T11 and Co1
D)  S1-S5
E)  L1-L5F) A) and C)
G) B) and E)

Question 14

Name the structures and spinal coverings that are penetrated during a lumbar puncture procedure.

Accepted Answer

A)  epidermis,dermis,skeletal muscle,subarachnoid space,arachnoid mater,dura mater,pia mater,subdural space
B)  dermis,epidermis,skeletal muscle,pia mater,arachnoid mater,dura mater,subdural space
C)  dermis,epidermis,skeletal muscle,dura mater,pia mater,arachnoid mater,subdural space
D)  epidermis,dermis,skeletal muscle,dura mater,arachnoid mater,subarachnoid space
E)  epidermis,dermis,skeletal muscle,pia mater,arachnoid mater,subarachnoid spaceF) All of the above
G) B) and D)

Question 15

Differentiate between sensory nuclei and motor nuclei.

Accepted Answer

A)  Sensory nuclei receive and relay sensory information to peripheral receptors; motor nuclei issue motor commands to peripheral receptors.
B)  Sensory nuclei receive and relay sensory information from peripheral receptors; motor nuclei issue motor commands to peripheral receptors.
C)  Sensory nuclei receive and relay sensory information from peripheral receptors; motor nuclei issue motor commands from peripheral receptors.
D)  Sensory nuclei receive and relay sensory information to peripheral receptors; motor nuclei issue motor commands from peripheral receptors.
E)  Sensory nuclei receive and relay sensory information from the CNS; motor nuclei issue motor commands to the CNS.F) B) and D)
G) C) and D)

Question 16

Enlargements of the spinal cord occur

Accepted Answer

A)  near the posterior median sulcus.
B)  adjacent to the anterior median fissure.
C)  in those spinal segments that control the limbs.
D)  in the thoracic region.
E)  in the sacral region.F) C) and D)
G) D) and E)

Question 17

Cerebrospinal fluid flows within the

Accepted Answer

A)  filum terminale.
B)  subarachnoid space.
C)  dura mater.
D)  pia mater.
E)  arachnoid mater.F) A) and C)
G) B) and D)

Question 18

What is a reflex arc? What components must be present to qualify?

Accepted Answer

A reflex arc is the wiring pattern of ne...

Question 19

Figure 12-1
-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 D)
G) A) and C)

Question 20

Nerve tracts or fasciculi make up the

Accepted Answer

A)  central canal.
B)  posterior gray horns.
C)  gray commissures.
D)  anterior white columns.
E)  all of the above.F) C) and D)
G) A) and B)

Exam 12: The Spinal Cord, spinal Nerves, and Spinal Reflexes

Nerve tracts or fasciculi make up the

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Cerebrospinal fluid flows within the

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Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord.As a result,which of the following would you expect?

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Which ramus carries sensory information from the limbs?

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Which spinal nerves are not part of a nerve plexus?

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Figure 12-1 -What is the function of the structure labeled "12"?

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During the procedure known as a spinal tap,a needle is inserted into the ________ in the inferior ________ region.

Correct AnswerverifiedShow Answer

Differentiate between sensory nuclei and motor nuclei.

Correct AnswerverifiedShow Answer

Through which root of a spinal nerve does visceral sensory information arrive?

Correct AnswerverifiedShow Answer

List the major nerves of the sacral plexus.

Correct AnswerverifiedShow Answer

What is a reflex arc? What components must be present to qualify?

Correct AnswerverifiedA reflex arc is the wiring pattern of ne...View AnswerShow Answer

All of the following are true of polysynaptic reflexesexceptthat they

Correct AnswerverifiedShow Answer

Enlargements of the spinal cord occur

Correct AnswerverifiedShow Answer

In the patellar reflex,identify the response observed and the effectors involved.

Correct AnswerverifiedShow Answer

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the

Correct AnswerverifiedShow Answer

Name the structures and spinal coverings that are penetrated during a lumbar puncture procedure.

Correct AnswerverifiedShow Answer

Which of the following describes the posterior root ganglion?

Correct AnswerverifiedShow Answer

Describe the composition of the gray matter of the spinal cord.

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What is a reflex?

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Where does the simplest processing occur?

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During the procedure known as a spinal tap,a needle is inserted into the in the inferior region.

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A reflex arc is the wiring pattern of ne...
View Answer

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