Question 1

-Label component "D" on the reflex arc.

Accepted Answer

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

Question 2

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 nervesF) None of the above
G) All of the above

Question 3

-Label component "A" on the reflex arc.

Accepted Answer

A)   sensory receptor
B)   effector organ
C)   sensory neuron
D)   motor neuron
E)   interneuronF) B) and D)
G) None of the above

Question 4

Where is cerebrospinal fluid found around the spinal cord?

Accepted Answer

A)   subdural space
B)   epidural space
C)   thecal sac
D)   subarachnoid spaceE) C) and D)
F) B) and D)

Question 5

The thickest of the meninges is the

Accepted Answer

A)   pia mater.
B)   arachnoid mater.
C)   subdural space.
D)   subarachnoid space.
E)   dura mater.F) B) and E)
G) All of the above

Question 6

-What does "A" represent?

Accepted Answer

A)   spinal nerves
B)   conus medullaris
C)   cervical enlargement
D)   filium terminale
E)   cauda equinaF) D) and E)
G) B) and C)

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 cellF) B) and C)
G) C) and D)

Question 8

-Label component "E" on the reflex arc.

Accepted Answer

A)   sensory receptor
B)   effector organ
C)   sensory neuron
D)   motor neuron
E)   interneuronF) B) and C)
G) C) and D)

Question 9

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.F) D) and E)
G) A) and E)

Question 10

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.E) C) and D)
F) B) and D)

Question 11

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 stretchedF) A) and B)
G) A) and C)

Question 12

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.F) C) and D)
G) A) and D)

Question 13

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 periosteumF) A) and E)
G) None of the above

Question 14

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 periosteumF) B) and E)
G) A) and E)

Question 15

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.F) A) and B)
G) A) and C)

Question 16

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 coccygealF) None of the above
G) A) and E)

Question 17

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) F) B) and E)
G) A) and D)

Question 18

The middle, thin, spider-like meninx is the

Accepted Answer

A)   dura mater.
B)   pia mater.
C)   ectomater.
D)   arachnoid mater.E) A) and C)
F) None of the above

Question 19

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.F) None of the above
G) A) and E)

Question 20

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 brainF) B) and E)
G) D) and E)

Exam 12: Spinal Cord and Spinal Nerves

The ventral root of a spinal nerve contains

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

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

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Match the term with the correct definition. -reflex arc

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

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Match the term with the correct definition. -epidural space

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The middle, thin, spider-like meninx is the

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-What does "A" represent?

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

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

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-Label component "D" on the reflex arc.

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The knee-jerk reflex involves which of the following?

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Dermatomal maps are important clinically because they

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-Label component "E" on the reflex arc.

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-Label component "A" on the reflex arc.

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

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Where is cerebrospinal fluid found around the spinal cord?

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The thickest of the meninges is the

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

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

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