Question 1

A diminished reflex response that may indicate damage to a segment of the spinal cord is a(n) _____ reflex.

Accepted Answer

A)  hypoactive
B)  hyperactive
C)  diminutive
D)  ponderous
E)  excessive

Question 2

What is the correct order for the events that occur during a reflex
A: Impulse travels through sensory neuron to the CNS
B: A stimulus activates a receptor
C: Information is processed by interneurons
D: Motor neuron transmits impulse to effector
E: Effector responds

Accepted Answer

A)  a,b,c,d,e
B)  b,a,c,d,e
C)  c,b,a,e,d
D)  c,a,b,d,e
E)  b,d,c,a,e

Question 3

The lateral funiculus contains both ascending and descending tracts.

Accepted Answer

A) True 
 B)False

Question 4

Which of the rami is much smaller than the other

Accepted Answer

A)  The anterior ramus
B)  The posterior ramus B

Question 5

The posterior ramus of a typical spinal nerve innervates the

Accepted Answer

A)  deep muscles of the back and the skin of the back.
B)  major thoracic and abdominal organs.
C)  abdominal wall.
D)  anterior and lateral trunk and the limbs.
E)  special senses.

Question 6

Because most pathways decussate,each side of the brain processes information from the _________ side of the body.

Accepted Answer

A)  contralateral
B)  ipsilateral

Question 7

The third cervical spinal nerve exits the vertebral column through the

Accepted Answer

A)  intervertebral foramen between C2 and C3 vertebrae.
B)  intervertebral foramen between C3 and C4 vertebrae.
C)  transverse foramen of C3 vertebra.
D)  vertebral canal of vertebrae C2,C3,and C4.

Question 8

The lateral horns of the spinal cord contain

Accepted Answer

A)  axons of motor neurons and interneuron cell bodies.
B)  axons of sensory and motor neurons.
C)  cell bodies of somatic sensory neurons.
D)  axons of sensory neurons and interneuron cell bodies.
E)  cell bodies of autonomic motor neurons.

Question 9

Following an injury to his arm,a patient complains that he cannot extend the forearm,wrist,and digits.You suspect that he has damaged the

Accepted Answer

A)  median nerve.
B)  radial nerve.
C)  musculocutaneous nerve.
D)  ulnar nerve.
E)  axillary nerve.

Question 10

In sum,there are ____ pairs of spinal nerves.

Accepted Answer

A)  13
B)  31
C)  40
D)  51
E)  12

Question 11

If someone steps on a sharp object with their right foot,it will lead to

Accepted Answer

A)  polysynaptic reflexes involving contraction of the right hamstring and left quadriceps.
B)  polysynaptic reflexes involving contraction of the right quadriceps and left hamstrings.
C)  a monosynaptic reflex causing contraction of the right hamstring and a polysynaptic reflex causing contraction of the left hamstring.
D)  a monosynaptic reflex causing contraction of the right quadriceps and a polysynaptic reflex causing contraction of the the left hamstring. A

Question 12

Stepping on a piece of glass would most likely invoke a _____ reflex.

Accepted Answer

A)  Golgi tendon
B)  withdrawal
C)  stretch
D)  pain
E)  motor

Question 13

A pathway has two parts: a bundle of CNS axons and a collection of neuron cell bodies in the CNS.

Accepted Answer

A) True 
 B)False

Question 14

The spinal cord part with the largest diameter is the ___________ part.

Accepted Answer

A)  thoracic
B)  cervical
C)  lumbar
D)  sacral
E)  coccygeal

Question 15

When the Achilles tendon is tapped or the bottom of the foot is stroked,the reflexive response is that the foot

Accepted Answer

A)  plantar flexes.
B)  dorsiflexes.
C)  inverts.
D)  everts. A

Question 16

-This figure shows spinal nerve branches.What structure does number 1 indicate

Accepted Answer

A)  Anterior ramus
B)  Posterior ramus
C)  Rami communicantes
D)  Sympathetic trunk ganglion
E)  Posterior root ganglion

Question 17

-This figure shows a cross section of the spinal cord.What structure does number 2 indicate

Accepted Answer

A)  Lateral horn
B)  Anterior horn
C)  Gray commissure
D)  Posterior horn
E)  Posterior funiculus

Question 18

Neurons of the thalamus that are part of sensory conduction pathways are considered

Accepted Answer

A)  primary neurons.
B)  secondary neurons.
C)  tertiary neurons.
D)  quaternary neurons.

Question 19

The alar plate of the embryo develops into the gray commissure of the spinal cord.

Accepted Answer

A) True 
 B)False

Question 20

Reflexes are described as

Accepted Answer

A)  slow and spontaneous.
B)  spontaneous and self-initiating.
C)  pre-programmed and voluntary.
D)  rapid and involuntary.

Exam 14: Nervous System: Spinal Cord and Spinal Nerves

A diminished reflex response that may indicate damage to a segment of the spinal cord is a(n) _____ reflex.

Correct AnswerverifiedShow Answer

What is the correct order for the events that occur during a reflex A: Impulse travels through sensory neuron to the CNS B: A stimulus activates a receptor C: Information is processed by interneurons D: Motor neuron transmits impulse to effector E: Effector responds

Correct AnswerverifiedShow Answer

The lateral funiculus contains both ascending and descending tracts.

Correct AnswerverifiedShow Answer

Which of the rami is much smaller than the other

Correct AnswerverifiedB

The posterior ramus of a typical spinal nerve innervates the

Correct AnswerverifiedShow Answer

Because most pathways decussate,each side of the brain processes information from the _________ side of the body.

Correct AnswerverifiedShow Answer

The third cervical spinal nerve exits the vertebral column through the

Correct AnswerverifiedShow Answer

The lateral horns of the spinal cord contain

Correct AnswerverifiedShow Answer

Following an injury to his arm,a patient complains that he cannot extend the forearm,wrist,and digits.You suspect that he has damaged the

Correct AnswerverifiedShow Answer

In sum,there are ____ pairs of spinal nerves.

Correct AnswerverifiedShow Answer

If someone steps on a sharp object with their right foot,it will lead to

Correct AnswerverifiedA

Stepping on a piece of glass would most likely invoke a _____ reflex.

Correct AnswerverifiedShow Answer

A pathway has two parts: a bundle of CNS axons and a collection of neuron cell bodies in the CNS.

Correct AnswerverifiedShow Answer

The spinal cord part with the largest diameter is the ___________ part.

Correct AnswerverifiedShow Answer

When the Achilles tendon is tapped or the bottom of the foot is stroked,the reflexive response is that the foot

Correct AnswerverifiedA

-This figure shows spinal nerve branches.What structure does number 1 indicate

Correct AnswerverifiedShow Answer

-This figure shows a cross section of the spinal cord.What structure does number 2 indicate

Correct AnswerverifiedShow Answer

Neurons of the thalamus that are part of sensory conduction pathways are considered

Correct AnswerverifiedShow Answer

The alar plate of the embryo develops into the gray commissure of the spinal cord.

Correct AnswerverifiedShow Answer

Reflexes are described as

Correct AnswerverifiedShow Answer

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