Question 1

There are _____ enlargements of the spinal cord where nerves supplying the extremities enter and leave.

Accepted Answer

A)  two
B)  three
C)  four
D)  five
E)  sixF) A) and D)
G) A) and E)

Question 2

What space,found between the vertebral wall and the dura mater,is the area for injecting anesthesia for childbirth?

Accepted Answer

A)  subarachnoid space
B)  subdural space
C)  epidural space
D)  epipial spaceE) B) and C)
F) None of the above

Question 3

Which of the following nerves is associated with the lumbosacral plexus?

Accepted Answer

A)  phrenic
B)  median
C)  musculocutaneous
D)  ulnar
E)  obturatorF) All of the above
G) A) and E)

Question 4

Match the disorder with its description.
-meningitis

Accepted Answer

A)  pain radiating down the back of the thigh and leg
B)  stiffness in the neck and headache
C)  inflammation of a nerve
D)  pain along a nerve tract
E)  loss of sensationF) A) and D)
G) A) and C)

Question 5

There are ________ cervical spinal nerves.

Accepted Answer

A)  eight
B)  twelve
C)  six
D)  five
E)  fourteenF) A) and C)
G) B) and E)

Question 6

The branch of a spinal nerve that innervates deep muscles on the dorsal thorax is the

Accepted Answer

A)  ramus communicans.
B)  lateral ramus.
C)  dorsal ramus.
D)  ventral ramus.
E)  medial ramus.F) A) and B)
G) All of the above

Question 7

The spinal cord ends at the

Accepted Answer

A)  sacrum.
B)  coccyx.
C)  5th lumbar vertebrae.
D)  2nd lumbar vertebrae.E) B) and C)
F) None of the above

Question 8

Which of the following statements concerning the structure of spinal nerves is true?

Accepted Answer

A)  The ventral root contains motor or efferent fibers.
B)  The ventral root has a prominent root ganglion.
C)  Rootlets from the surface of the spinal cord form the dorsal and ventral rami.
D)  Each spinal nerve is formed by the union of a cranial nerve and a spinal nerve.
E)  Spinal nerves do not have specific cutaneous distributions.F) A) and B)
G) A) and E)

Question 9

Damage to the phrenic nerve would result in

Accepted Answer

A)  the loss of motor activity in the arms.
B)  an increased heart rate.
C)  an inability to swallow.
D)  difficulty breathing.
E)  a decreased heart rate.F) A) and E)
G) A) and C)

Question 10

-Label component "A" on the reflex arc.

Accepted Answer

A)  sensory receptor
B)  effector organ
C)  sensory neuron
D)  motor neuron
E)  interneuronF) All of the above
G) B) and D)

Question 11

Sam is curling very heavy weights and suddenly drops them.Which reflex forced this action by Sam to prevent tendon damage?

Accepted Answer

A)   muscle spindle reflex
B)   Golgi tendon reflex
C)   gamma motor reflex
D)   withdrawal reflex
E)   alpha motor neuron reflexF) C) and D)
G) A) and B)

Question 12

Match the term with the most appropriate description.
-a reflex that helps prevent falls

Accepted Answer

A)  stretch reflex
B)  Golgi tendon reflex
C)  withdrawal reflex
D)  crossed extensor reflex
E)  reciprocal innervationF) B) and C)
G) A) and E)

Question 13

Which nerve is involved when a dancer points his/her toes?

Accepted Answer

A)  tibial
B)  femoral
C)  obturator
D)  pudendal
E)  common fibular (peroneal) F) C) and D)
G) A) and D)

Question 14

The adaptive significance of the crossed extensor reflex when a person steps on a tack is to

Accepted Answer

A)  remove the foot from the tack.
B)  increase the rate at which withdrawal of the limb occurs.
C)  slow the rate of removal of the foot from the tack.
D)  reduce the pain sensations.
E)  prevent the person from falling down.F) B) and E)
G) B) and D)

Question 15

Stretch reflexes

Accepted Answer

A)  are learned voluntary responses.
B)  aid in maintaining proper posture.
C)  prevent muscles from being damaged by excessive tension.
D)  cause the removal of limbs from painful stimuli.
E)  prevent falling.F) A) and E)
G) A) and D)

Question 16

What is found the lateral gray horns of the spinal cord?

Accepted Answer

A)  The cell bodies of somatic motor neurons.
B)  The cell bodies of sensory neurons.
C)  The cell bodies of autonomic motor neurons.
D)  The cell bodies of somatic sensory neurons.E) B) and D)
F) None of the above

Question 17

Which of the following nerves is part of the brachial plexus?

Accepted Answer

A)  peroneal
B)  ansa cervicalis
C)  ischiadic (sciatic) 
D)  musculocutaneous
E)  femoralF) A) and D)
G) A) and C)

Question 18

What structure anchors the thecal sac and conus medullaris to the coccyx?

Accepted Answer

A)  filum terminale
B)  denticulate ligaments
C)  pia mater
D)  cauda equinaE) None of the above
F) A) and B)

Question 19

The spinal cord

Accepted Answer

A)  controls the reticular activating system.
B)  stores reflexive memory.
C)  forms memory engrams.
D)  links the peripheral nervous system to the brain.
E)  is characterized by conscious activity.F) B) and C)
G) B) and D)

Question 20

Match the nerve to the correct function.
-ulnar nerve

Accepted Answer

A)  provides motor innervation to the biceps brachii
B)  innervates two forearm muscles plus most of the intrinsic hand muscles
C)  innervates all but one of the flexor muscles of the forearm and most of the hand muscles near the thumb
D)  innervates the deltoid and teres minor muscles
E)  innervates the triceps brachiiF) A) and E)
G) A) and B)

Exam 12: Spinal Cord and Spinal Nerves

Sam is curling very heavy weights and suddenly drops them.Which reflex forced this action by Sam to prevent tendon damage?

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Which of the following nerves is part of the brachial plexus?

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What is found the lateral gray horns of the spinal cord?

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Match the nerve to the correct function. -ulnar nerve

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There are _____ enlargements of the spinal cord where nerves supplying the extremities enter and leave.

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The spinal cord

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What structure anchors the thecal sac and conus medullaris to the coccyx?

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Stretch reflexes

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The adaptive significance of the crossed extensor reflex when a person steps on a tack is to

Correct AnswerverifiedShow Answer

Match the term with the most appropriate description. -a reflex that helps prevent falls

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Which nerve is involved when a dancer points his/her toes?

Correct AnswerverifiedShow Answer

Match the disorder with its description. -meningitis

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-Label component "A" on the reflex arc.

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What space,found between the vertebral wall and the dura mater,is the area for injecting anesthesia for childbirth?

Correct AnswerverifiedShow Answer

Damage to the phrenic nerve would result in

Correct AnswerverifiedShow Answer

Which of the following statements concerning the structure of spinal nerves is true?

Correct AnswerverifiedShow Answer

There are ________ cervical spinal nerves.

Correct AnswerverifiedShow Answer

The branch of a spinal nerve that innervates deep muscles on the dorsal thorax is the

Correct AnswerverifiedShow Answer

Which of the following nerves is associated with the lumbosacral plexus?

Correct AnswerverifiedShow Answer

The spinal cord ends at the

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