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)  six 
A)  two 
B)  three 
C)  four 
D)  five 
E)  six

Question 2

What does "E" represent?

Accepted Answer

A)  central canal 
B)  ventral root 
C)  dorsal root ganglion 
D)  spinal nerve 
E)  dorsal root 
A)  central canal 
B)  ventral root 
C)  dorsal root ganglion 
D)  spinal nerve 
E)  dorsal root

Question 3

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. 
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.

Question 4

Which of the following nerves is a branch of both the cervical plexus and the brachial plexus?

Accepted Answer

A)  axillary 
B)  femoral 
C)  phrenic 
D)  sciatic 
E)  splanchnic 
A)  axillary 
B)  femoral 
C)  phrenic 
D)  sciatic 
E)  splanchnic

Question 5

When a person sits on a hard surface for a period of time, his foot or leg may "go to sleep." This sensation is the result of compressing the _____ nerve.

Accepted Answer

A)  femoral 
B)  sciatic 
C)  obturator 
D)  pudendal 
E)  ulnar 
A)  femoral 
B)  sciatic 
C)  obturator 
D)  pudendal 
E)  ulnar

Question 6

Muscles and glands that are capable of producing a response when stimulated by motor neurons are called

Accepted Answer

A)  aponeuroses. 
B)  effectors. 
C)  neuromodulators. 
D)  receptors. 
E)  sensory organs. 
A)  aponeuroses. 
B)  effectors. 
C)  neuromodulators. 
D)  receptors. 
E)  sensory organs.

Question 7

Match the disorder with its description.
-sciatica

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 sensation 
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 sensation

Question 8

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. 
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.

Question 9

The gastrocnemius muscle is most likely to be innervated by the _____ nerve.

Accepted Answer

A)  obturator 
B)  common fibular (peroneal) 
C)  tibial 
D)  femoral 
E)  median 
A)  obturator 
B)  common fibular (peroneal) 
C)  tibial 
D)  femoral 
E)  median

Question 10

Match the term with the most appropriate description.
-the knee-jerk

Accepted Answer

A) stretch reflex 
B) Golgi tendon reflex 
C) withdrawal reflex 
D) crossed extensor reflex 
E) reciprocal innervation 
A) stretch reflex 
B) Golgi tendon reflex 
C) withdrawal reflex 
D) crossed extensor reflex 
E) reciprocal innervation

Question 11

The endoneurium

Accepted Answer

A)  surrounds nerve cell bodies. 
B)  surrounds individual axons and their Schwann cells. 
C)  bundles axons into fascicles. 
D)  bundles fascicles into nerves. 
E)  surrounds nerve tracts in the spinal cord. 
A)  surrounds nerve cell bodies. 
B)  surrounds individual axons and their Schwann cells. 
C)  bundles axons into fascicles. 
D)  bundles fascicles into nerves. 
E)  surrounds nerve tracts in the spinal cord.

Question 12

Improper use of crutches could cause compression of the _____ nerve.

Accepted Answer

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

Question 13

Spinal nerves C5-T1 make up the ____________ plexus.

Accepted Answer

A)  sacral 
B)  lumbar 
C)  brachial 
D)  cervical 
E)  radial 
A)  sacral 
B)  lumbar 
C)  brachial 
D)  cervical 
E)  radial

Question 14

The perineurium

Accepted Answer

A)  surrounds nerve cell bodies. 
B)  surrounds individual axons and their Schwann cells. 
C)  bundles axons into fascicles. 
D)  bundles fascicles into nerves. 
E)  bundles fascicles into axons. 
A)  surrounds nerve cell bodies. 
B)  surrounds individual axons and their Schwann cells. 
C)  bundles axons into fascicles. 
D)  bundles fascicles into nerves. 
E)  bundles fascicles into axons.

Question 15

Match the term with the most appropriate description.
-associated with withdrawal and stretch reflex

Accepted Answer

A) stretch reflex 
B) Golgi tendon reflex 
C) withdrawal reflex 
D) crossed extensor reflex 
E) reciprocal innervation 
A) stretch reflex 
B) Golgi tendon reflex 
C) withdrawal reflex 
D) crossed extensor reflex 
E) reciprocal innervation

Question 16

Match the nerve with the appropriate description.
-obturator nerve

Accepted Answer

A) innervates the iliopsoas, sartorius, and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves 
A) innervates the iliopsoas, sartorius, and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves

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)  femoral 
A)  peroneal 
B)  ansa cervicalis 
C)  ischiadic (sciatic) 
D)  musculocutaneous 
E)  femoral

Question 18

When a person hits their funny bone, they cause temporary damage to the _____ nerve.

Accepted Answer

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

Question 19

The cutaneous sensory distribution of a spinal nerve can be mapped as a

Accepted Answer

A)  dermatome. 
B)  plexitome. 
C)  microtome. 
D)  myotome. 
E)  superdome. 
A)  dermatome. 
B)  plexitome. 
C)  microtome. 
D)  myotome. 
E)  superdome.

Question 20

What is found in the dorsal root ganglion?

Accepted Answer

A)  The cell bodies of multipolar motor neurons. 
B)  The cell bodies of pseudo-unipolar sensory neurons. 
C)  The cell bodies of multipolar interneurons. 
D)  The cell bodies of bipolar sensory neurons. 
A)  The cell bodies of multipolar motor neurons. 
B)  The cell bodies of pseudo-unipolar sensory neurons. 
C)  The cell bodies of multipolar interneurons. 
D)  The cell bodies of bipolar sensory neurons.

Exam 12: Spinal Cord and Spinal Nerves

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

What does "E" represent?

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

Which of the following nerves is a branch of both the cervical plexus and the brachial plexus?

When a person sits on a hard surface for a period of time, his foot or leg may "go to sleep." This sensation is the result of compressing the _____ nerve.

Muscles and glands that are capable of producing a response when stimulated by motor neurons are called

Match the disorder with its description. -sciatica

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

The gastrocnemius muscle is most likely to be innervated by the _____ nerve.

Match the term with the most appropriate description. -the knee-jerk

The endoneurium

Improper use of crutches could cause compression of the _____ nerve.

Spinal nerves C5-T1 make up the ____________ plexus.

The perineurium

Match the term with the most appropriate description. -associated with withdrawal and stretch reflex

Match the nerve with the appropriate description. -obturator nerve

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

When a person hits their funny bone, they cause temporary damage to the _____ nerve.

The cutaneous sensory distribution of a spinal nerve can be mapped as a

What is found in the dorsal root ganglion?

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