Question 1

The ________ is a strand of fibrous tissue that provides longitudinal support to the spinal cord as a component of the coccygeal ligament.

Accepted Answer

A)  conus medullaris
B)  filum terminale
C)  cauda equina
D)  dorsal root
E)  ventral rootF) B) and E)
G) B) and D)

Question 2

The ________ reflex complements the flexor reflex by activating contralateral muscles.

Accepted Answer

A)  stretch
B)  tendon
C)  flexor
D)  crossed extensor
E)  reciprocalF) C) and E)
G) B) and E)

Question 3

During the procedure known as a(n) ________,a needle is inserted into the subarachnoid space in the inferior lumbar region.

Accepted Answer

A)  EEG
B)  encephalomyelogram
C)  laminectomy
D)  lumbar puncture
E)  thoracic tapF) A) and E)
G) A) and D)

Question 4

Which of the following associations is incorrect?

Accepted Answer

A)  8 cervical spinal nerves
B)  11 thoracic spinal nerves
C)  5 lumbar spinal nerves
D)  5 sacral spinal nerves
E)  1 coccygeal spinal nerveF) A) and E)
G) A) and C)

Question 5

A complex,interwoven network of nerves is called a

Accepted Answer

A)  dermatome.
B)  ramus.
C)  plexus.
D)  ganglion.
E)  tracts.F) C) and E)
G) B) and E)

Question 6

The neural "wiring" of a single reflex is called a(n)

Accepted Answer

A)  reflex arc.
B)  ramus.
C)  ganglion.
D)  tract.
E)  intershoot.F) D) and E)
G) A) and B)

Question 7

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 C)
G) B) and D)

Question 8

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 9

The dorsal root contains ________ neurons.

Accepted Answer

A)  sensory
B)  motor
C)  interneurons
D)  efferent
E)  unipolarF) C) and E)
G) A) and B)

Question 10

The ________ innervates the ventrolateral body surface,structures in the body wall,and the limbs.

Accepted Answer

A)  white rami communicantes
B)  gray rami communicantes
C)  dorsal ramus
D)  ventral ramus
E)  dermatomesF) B) and D)
G) B) and C)

Question 11

Which of the following is not true about a positive Babinski reflex?

Accepted Answer

A)  normal in newborns
B)  abnormal in adults
C)  a sign of injury to descending spinal tracts
D)  why you close your eyes when you sneeze
E)  flaring of the toes when the sole is strokedF) B) and D)
G) C) and E)

Question 12

The gray horns of the spinal cord contain mainly

Accepted Answer

A)  nerve tracts.
B)  columns.
C)  meninges.
D)  neuron cell bodies.
E)  funiculi.F) B) and C)
G) D) and E)

Question 13

The nerve crucial for breathing that originates within the cervical plexus is called the ________ nerve.

Accepted Answer

A)  brachial
B)  phrenic
C)  intercostal
D)  ganglion
E)  sciaticF) B) and E)
G) B) and D)

Question 14

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) All of the above
G) C) and D)

Question 15

The white matter of the spinal cord contains

Accepted Answer

A)  bundles of axons with common origins,destinations,and functions.
B)  bundles of dendrites with common origins,destinations,and functions.
C)  sensory and motor nuclei.
D)  both axons and dendrites.
E)  interneurons.F) C) and D)
G) A) and B)

Question 16

All of the following are true of muscle spindles except that they

Accepted Answer

A)  are found within skeletal muscle.
B)  consist of specialized fibers called intrafusal fibers.
C)  are found in tendons.
D)  are the receptor for the stretch reflex.
E)  are innervated by gamma motor neurons.F) A) and E)
G) C) and E)

Question 17

The condition in which a person loses all feeling and movement of the arms and legs due to spinal cord injury is termed

Accepted Answer

A)  paraplegia.
B)  hemiplegia.
C)  spinal shock.
D)  quadriplegia.
E)  spinal transection.F) A) and C)
G) A) and B)

Question 18

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 moving his legsF) A) and E)
G) A) and D)

Question 19

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) A) and E)
G) None of the above

Question 20

The outward projections from the central gray matter of the spinal cord,seen easily in microscopic spinal cord cross sections,are called

Accepted Answer

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

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

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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The white matter of the spinal cord contains

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The nerve crucial for breathing that originates within the cervical plexus is called the ________ nerve.

Correct AnswerverifiedShow Answer

The ________ reflex complements the flexor reflex by activating contralateral muscles.

Correct AnswerverifiedShow Answer

The ventral root of a spinal nerve contains

Correct AnswerverifiedShow Answer

During the procedure known as a(n) ________,a needle is inserted into the subarachnoid space in the inferior lumbar region.

Correct AnswerverifiedShow Answer

All of the following are true of muscle spindles except that they

Correct AnswerverifiedShow Answer

A complex,interwoven network of nerves is called a

Correct AnswerverifiedShow Answer

Which of the following is not true about a positive Babinski reflex?

Correct AnswerverifiedShow Answer

Spinal interneurons inhibit antagonist motor neurons in a process called

Correct AnswerverifiedShow Answer

The ________ innervates the ventrolateral body surface,structures in the body wall,and the limbs.

Correct AnswerverifiedShow Answer

The dorsal root contains ________ neurons.

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The ________ is a strand of fibrous tissue that provides longitudinal support to the spinal cord as a component of the coccygeal ligament.

Correct AnswerverifiedShow Answer

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

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The gray horns of the spinal cord contain mainly

Correct AnswerverifiedShow Answer

The neural "wiring" of a single reflex is called a(n)

Correct AnswerverifiedShow Answer

The outward projections from the central gray matter of the spinal cord,seen easily in microscopic spinal cord cross sections,are called

Correct AnswerverifiedShow Answer

The condition in which a person loses all feeling and movement of the arms and legs due to spinal cord injury is termed

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

Which of the following associations is incorrect?

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Descending motor tracts that excite the ...
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