Question 1

All spinal nerves from C2 to L5 exit the vertebral column through a(n)

Accepted Answer

A)  vertebral foramen. 
B)  spinal foramen. 
C)  dorsal root ganglion. 
D)  intervertebral foramen. 
E)  foramen magnum. 
A)  vertebral foramen. 
B)  spinal foramen. 
C)  dorsal root ganglion. 
D)  intervertebral foramen. 
E)  foramen magnum.

Question 2

The ventral root of a spinal nerve contains

Accepted Answer

A)  only sensory fibers. 
B)  only motor fibers. 
C)  only afferent fibers. 
D)  both sensory and motor fibers. 
E)  a ganglion. 
A)  only sensory fibers. 
B)  only motor fibers. 
C)  only afferent fibers. 
D)  both sensory and motor fibers. 
E)  a ganglion.

Question 3

The thickest of the meninges is the

Accepted Answer

A)  pia mater. 
B)  arachnoid mater. 
C)  subdural space. 
D)  subarachnoid space. 
E)  dura mater. 
A)  pia mater. 
B)  arachnoid mater. 
C)  subdural space. 
D)  subarachnoid space. 
E)  dura mater.

Question 4

Match the term with the correct definition.
-epidural space

Accepted Answer

A) functional unit of the nervous system 
B) most superficial and thickest meninx 
C) the middle meninx 
D) the meninx bound tightly to brain and spinal cord 
E) separates dura mater from periosteum 
A) functional unit of the nervous system 
B) most superficial and thickest meninx 
C) the middle meninx 
D) the meninx bound tightly to brain and spinal cord 
E) separates dura mater from periosteum

Question 5

Dermatomal maps are important clinically because they

Accepted Answer

A)  can be used to check for motor function. 
B)  locate the position of cranial nerves. 
C)  can be used to help locate nerve damage. 
D)  indicate what muscles are innervated by each spinal nerve. 
E)  can be used to detect cranial nerve damage. 
A)  can be used to check for motor function. 
B)  locate the position of cranial nerves. 
C)  can be used to help locate nerve damage. 
D)  indicate what muscles are innervated by each spinal nerve. 
E)  can be used to detect cranial nerve damage.

Question 6

-What does "A" represent?

Accepted Answer

A)  spinal nerves 
B)  conus medullaris 
C)  cervical enlargement 
D)  filium terminale 
E)  cauda equina 
A)  spinal nerves 
B)  conus medullaris 
C)  cervical enlargement 
D)  filium terminale 
E)  cauda equina

Question 7

Which portion of a reflex arc is most likely to be located entirely within the central nervous system?

Accepted Answer

A)  sensory neuron 
B)  motor neuron 
C)  effector cell 
D)  interneuron 
E)  receptor cell 
A)  sensory neuron 
B)  motor neuron 
C)  effector cell 
D)  interneuron 
E)  receptor cell

Question 8

The middle, thin, spider-like meninx is the

Accepted Answer

A)  dura mater. 
B)  pia mater. 
C)  ectomater. 
D)  arachnoid mater. 
A)  dura mater. 
B)  pia mater. 
C)  ectomater. 
D)  arachnoid mater.

Question 9

-Label component "D" on the reflex arc.

Accepted Answer

A)  sensory receptor 
B)  effector organ 
C)  sensory neuron 
D)  motor neuron 
E)  interneuron 
A)  sensory receptor 
B)  effector organ 
C)  sensory neuron 
D)  motor neuron 
E)  interneuron

Question 10

The knee-jerk reflex involves which of the following?

Accepted Answer

A)  sensory and motor neurons 
B)  sensory, association and motor neurons 
C)  sensory, motor and inhibitory interneurons 
D)  sensory and association neurons 
E)  the brain 
A)  sensory and motor neurons 
B)  sensory, association and motor neurons 
C)  sensory, motor and inhibitory interneurons 
D)  sensory and association neurons 
E)  the brain

Question 11

Where is cerebrospinal fluid found around the spinal cord?

Accepted Answer

A)  subdural space 
B)  epidural space 
C)  thecal sac 
D)  subarachnoid space 
A)  subdural space 
B)  epidural space 
C)  thecal sac 
D)  subarachnoid space

Question 12

-Label component "E" on the reflex arc.

Accepted Answer

A)  sensory receptor 
B)  effector organ 
C)  sensory neuron 
D)  motor neuron 
E)  interneuron 
A)  sensory receptor 
B)  effector organ 
C)  sensory neuron 
D)  motor neuron 
E)  interneuron

Question 13

Which of the following combinations indicates the correct distribution of spinal nerve pairs?

Accepted Answer

A)  7 cervical - 12 thoracic - 6 lumbar - 5 sacral - 1 coccygeal 
B)  7 cervical - 12 thoracic - 5 lumbar - 6 sacral - 1 coccygeal 
C)  8 cervical - 12 thoracic - 6 lumbar - 4 sacral - 1 coccygeal 
D)  8 cervical - 12 thoracic - 5 lumbar - 5 sacral - 1 coccygeal 
E)  7 cervical - 13 thoracic - 6 lumbar - 5 sacral - 1 coccygeal 
A)  7 cervical - 12 thoracic - 6 lumbar - 5 sacral - 1 coccygeal 
B)  7 cervical - 12 thoracic - 5 lumbar - 6 sacral - 1 coccygeal 
C)  8 cervical - 12 thoracic - 6 lumbar - 4 sacral - 1 coccygeal 
D)  8 cervical - 12 thoracic - 5 lumbar - 5 sacral - 1 coccygeal 
E)  7 cervical - 13 thoracic - 6 lumbar - 5 sacral - 1 coccygeal

Question 14

Branches of the ____ nerve are anesthetized before a doctor performs an episiotomy for childbirth.

Accepted Answer

A)  genitofemoral 
B)  gluteal 
C)  cutaneous femoral 
D)  pudendal 
E)  common fibular (peroneal) 
A)  genitofemoral 
B)  gluteal 
C)  cutaneous femoral 
D)  pudendal 
E)  common fibular (peroneal)

Question 15

-Label component "A" on the reflex arc.

Accepted Answer

A)  sensory receptor 
B)  effector organ 
C)  sensory neuron 
D)  motor neuron 
E)  interneuron 
A)  sensory receptor 
B)  effector organ 
C)  sensory neuron 
D)  motor neuron 
E)  interneuron

Question 16

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

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

The cross-sectional view of the spinal cord reveals white matter on the

Accepted Answer

A)  inside, gray matter on the outside, and a dorsal motor root. 
B)  outside, gray matter on the inside, and a ventral motor root. 
C)  inside, gray matter on the outside, and a dorsal sensory root. 
D)  outside, gray matter on the inside, and a ventral sensory root. 
A)  inside, gray matter on the outside, and a dorsal motor root. 
B)  outside, gray matter on the inside, and a ventral motor root. 
C)  inside, gray matter on the outside, and a dorsal sensory root. 
D)  outside, gray matter on the inside, and a ventral sensory root.

Question 18

Which of the following events in a stretch reflex occurs last?

Accepted Answer

A)  alpha motor neurons transmit action potentials to muscle causing contraction 
B)  muscle spindle detects stretch of muscle 
C)  afferent neurons conduct action potentials to the spinal cord 
D)  afferent neurons synapse with alpha motor neurons 
E)  muscle is stretched 
A)  alpha motor neurons transmit action potentials to muscle causing contraction 
B)  muscle spindle detects stretch of muscle 
C)  afferent neurons conduct action potentials to the spinal cord 
D)  afferent neurons synapse with alpha motor neurons 
E)  muscle is stretched

Question 19

Match the term with the correct definition.
-reflex arc

Accepted Answer

A) functional unit of the nervous system 
B) most superficial and thickest meninx 
C) the middle meninx 
D) the meninx bound tightly to brain and spinal cord 
E) separates dura mater from periosteum 
A) functional unit of the nervous system 
B) most superficial and thickest meninx 
C) the middle meninx 
D) the meninx bound tightly to brain and spinal cord 
E) separates dura mater from periosteum

Question 20

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.

Exam 12: Spinal Cord and Spinal Nerves

All spinal nerves from C2 to L5 exit the vertebral column through a(n)

The ventral root of a spinal nerve contains

The thickest of the meninges is the

Match the term with the correct definition. -epidural space

Dermatomal maps are important clinically because they

-What does "A" represent?

Which portion of a reflex arc is most likely to be located entirely within the central nervous system?

The middle, thin, spider-like meninx is the

-Label component "D" on the reflex arc.

The knee-jerk reflex involves which of the following?

Where is cerebrospinal fluid found around the spinal cord?

-Label component "E" on the reflex arc.

Which of the following combinations indicates the correct distribution of spinal nerve pairs?

Branches of the ____ nerve are anesthetized before a doctor performs an episiotomy for childbirth.

-Label component "A" on the reflex arc.

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

The cross-sectional view of the spinal cord reveals white matter on the

Which of the following events in a stretch reflex occurs last?

Match the term with the correct definition. -reflex arc

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

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