Question 1

The ________ innervate(s) the ventrolateral body surface,structures in the body wall,and the limbs.

Accepted Answer

A)  white rami communicans
B)  gray rami communicans
C)  posterior ramus
D)  anterior ramus
E)  dermatomesF) A) and E)
G) B) and D)

Question 2

A typical spinal cord has how many pairs of spinal nerves,and where does the spinal cord end?

Accepted Answer

A)  8 pairs; cervical vertebra 8
B)  20 pairs; thoracic vertebra 12
C)  25 pairs; lumbar vertebra 1 or 2
D)  30 pairs; lumbar vertebra 4 or 5
E)  31 pairs; lumbar vertebra 1 or 2F) A) and E)
G) B) and D)

Question 3

Which of the following is not true of the spinal cord?

Accepted Answer

A)  It interacts with the muscular system to provide involuntary movement.
B)  It interacts with the digestive system by receiving sensory signals from the stomach.
C)  It interacts with the urinary by receiving sensory signals from the bladder.
D)  It interacts with the muscular system by initiating voluntary movement of skeletal muscles.E) None of the above
F) A) and B)

Question 4

In which plexus does the ulnar nerve arise?

Accepted Answer

A)  cranial
B)  cervical
C)  brachial
D)  lumbar
E)  sacralF) C) and E)
G) All of the above

Question 5

Each of the following nerves originates in the lumbar plexus except the ________ nerve.

Accepted Answer

A)  saphenous
B)  sciatic
C)  femoral
D)  obturator
E)  genitofemoralF) C) and D)
G) C) and E)

Question 6

The epidural space contains

Accepted Answer

A)  cerebrospinal fluid.
B)  lymph.
C)  blood.
D)  connective tissue and blood vessels.
E)  denticulate ligaments.F) A) and B)
G) A) and E)

Question 7

Name the pair of spinal nerves that emerges between vertebrae C7 and T1.

Accepted Answer

A)  C6
B)  C7
C)  C8
D)  T1
E)  T0F) B) and C)
G) A) and E)

Question 8

Name the major nerves associated with the brachial plexus.

Accepted Answer

The major nerves associated with the bra...

Question 9

During a withdrawal reflex of the foot,what happens to the limb on the side opposite the stimulus? What is this response called?

Accepted Answer

A)  The opposite side is also flexed.This is called the crossed flexor reflex.
B)  The opposite side is extended.This is called the crossed extensor reflex.
C)  The opposite side is also flexed.This is called reciprocal inhibition.
D)  The opposite side is extended.This is called reciprocal inhibition.
E)  The opposite side is extended.This is called reinforcement.F) B) and E)
G) A) and D)

Question 10

The anterior 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 E)
G) A) and B)

Question 11

The ________ of each spinal nerve innervates the skin and muscles of the back.

Accepted Answer

A)  white ramus communicans
B)  gray ramus communicans
C)  posterior ramus
D)  anterior ramus
E)  dermatomeF) D) and E)
G) All of the above

Question 12

The layer of the meninges in direct contact with the spinal cord is the

Accepted Answer

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

Question 13

Recognized neuronal circuit patterns include all of the following except

Accepted Answer

A)  convergent.
B)  divergent.
C)  multipolar.
D)  reverberating.
E)  parallel processing.F) B) and C)
G) A) and D)

Question 14

The ________ plexus supplies innervation to the diaphragm.

Accepted Answer

A)  spinal
B)  cervical
C)  thoracic
D)  lumbar
E)  sacralF) C) and E)
G) C) and D)

Question 15

Describe the lumbar plexus and sacral plexus.

Accepted Answer

A)  The lumbar plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments C1-C5; the sacral plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments C5-T1.
B)  The lumbar plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments T12-L4; the sacral plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments S4-Co1.
C)  The lumbar plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments C1-C5; the sacral plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments S4-Co1.
D)  The lumbar plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments L1-L5; the sacral plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments L4-S5.
E)  The lumbar plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments T12-L4; the sacral plexus is a nerve network formed by axons from the anterior rami of spinal nerve segments L4-S4.F) All of the above
G) A) and D)

Question 16

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) B) and C)
G) None of the above

Question 17

In an adult,the conus medullaris is found at about

Accepted Answer

A)  T6.
B)  T10.
C)  L1.
D)  L5.
E)  Co1.F) C) and E)
G) B) and C)

Question 18

Figure 12-2
-Identify the structure labeled "2."

Accepted Answer

A)  anterior root
B)  posterior ramus
C)  spinal nerve
D)  anterior ramus
E)  white ramusF) C) and E)
G) A) and B)

Question 19

The anterior horns of the spinal cord contain mainly

Accepted Answer

A)  sensory nuclei.
B)  somatic motor nuclei.
C)  autonomic motor nuclei.
D)  nerve tracts.
E)  sympathetic nuclei.F) B) and C)
G) B) and E)

Question 20

Somatic motor neurons in the spinal cord control all of the following muscles except those that

Accepted Answer

A)  position the pectoral girdle.
B)  move the arm.
C)  move the hand and fingers.
D)  move the face.
E)  move the forearm and hand.F) A) and B)
G) B) and E)

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

The layer of the meninges in direct contact with the spinal cord is the

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The ________ plexus supplies innervation to the diaphragm.

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Name the major nerves associated with the brachial plexus.

Correct AnswerverifiedThe major nerves associated with the bra...View AnswerShow Answer

Name the pair of spinal nerves that emerges between vertebrae C7 and T1.

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Each of the following nerves originates in the lumbar plexus except the ________ nerve.

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The ________ of each spinal nerve innervates the skin and muscles of the back.

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Figure 12-2 -Identify the structure labeled "2."

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The anterior horns of the spinal cord contain mainly

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The anterior root of a spinal nerve contains

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During a withdrawal reflex of the foot,what happens to the limb on the side opposite the stimulus? What is this response called?

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The epidural space contains

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Recognized neuronal circuit patterns include all of the following except

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In which plexus does the ulnar nerve arise?

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Spinal interneurons inhibit antagonist motor neurons in a process called

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The ________ innervate(s) the ventrolateral body surface,structures in the body wall,and the limbs.

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Somatic motor neurons in the spinal cord control all of the following muscles except those that

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In an adult,the conus medullaris is found at about

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A typical spinal cord has how many pairs of spinal nerves,and where does the spinal cord end?

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Describe the lumbar plexus and sacral plexus.

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Which of the following is not true of the spinal cord?

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The major nerves associated with the bra...
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