Question 1

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

Question 2

If you pinch your index finger in a door, pain sensations are carried via the ____ nerve.

Accepted Answer

A)   radial
B)   median
C)   axillary
D)   musculocutaneous
E)   ulnarF) C) and D)
G) A) and C)

Question 3

If the ventral root of a spinal nerve were cut, the regions innervated by that spinal nerve would experience complete loss of

Accepted Answer

A)   sensation.
B)   movement.
C)   sensation and movement.
D)   pain.
E)   None of these choices is correct.F) A) and E)
G) A) and C)

Question 4

The sensory root of a spinal nerve is also referred to as

Accepted Answer

A)   anterior root.
B)   dorsal root.
C)   efferent root.
D)   ventral root.
E)   lateral root.F) B) and E)
G) C) and E)

Question 5

The motor root of a spinal nerve is also referred to as the

Accepted Answer

A)   afferent root.
B)   dorsal root.
C)   posterior root.
D)   ventral root.
E)   sensory root.F) A) and B)
G) C) and D)

Question 6

There are ________ cervical spinal nerves.

Accepted Answer

A)   eight
B)   twelve
C)   six
D)   five
E)   fourteenF) None of the above
G) C) and D)

Question 7

Ventral rami of some spinal nerves join with each other to form a

Accepted Answer

A)   ganglion.
B)   dermatome.
C)   cord.
D)   plexus.
E)   nerve.F) B) and C)
G) A) and E) D

Question 8

Label component "B" on the reflex arc.

Accepted Answer

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

Question 9

Stimulation of the Golgi tendon organs result in which of the following changes in the reflex arc?

Accepted Answer

A)   stimulation of a stimulatory association neuron
B)   stimulation of an inhibitory neuron
C)   decreased action potentials in alpha motor neurons
D)   contraction of skeletal muscle fibers
E)   stimulation of an inhibitory neuron and decreased action potentials in alpha motor neuronsF) A) and E)
G) B) and C) E

Question 10

Match the disorder with its description.
-neuralgia

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

Question 11

The sac surrounding the spinal cord is the

Accepted Answer

A)   dural sac.
B)   meningeal sac.
C)   thecal sac.
D)   epidural sac.E) A) and D)
F) B) and C)

Question 12

Gamma motor neurons

Accepted Answer

A)   are located in tendons.
B)   transmit action potentials to skeletal muscle.
C)   regulate the sensitivity of the muscle spindle.
D)   enable the brain to perceive that a muscle has been stretched.
E)   innervate the whole muscle.F) C) and D)
G) All of the above

Question 13

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) A

Question 14

The muscles of the back contract to straighten so that you sit at a more erect posture and subsequently the muscles are suddenly stretched as you nod off. Which of the following best represents the sequence of events when you start to nod off? (1)  muscles of the back are stretched
(2)  the muscle spindle is stretched
(3)  action potentials in sensory neurons of the muscle spindles increase
(4)  action potentials in alpha motor neurons of skeletal muscle fibers increase
(5)  skeletal muscle of the back contract

Accepted Answer

A)   1, 2, 3, 4, 5
B)   1, 5, 2, 3, 4
C)   1, 5, 3, 2, 4
D)   5, 2, 3, 4, 1
E)   4, 5, 3, 2, 1F) A) and B)
G) D) and E)

Question 15

The conus medullaris

Accepted Answer

A)   anchors the spinal cord to the coccyx.
B)   is a tapered, cone like region immediately inferior to the lumbar enlargement.
C)   marks the exit of nerves to the upper extremity.
D)   is located adjacent to the foramen magnum.
E)   is inferior to the cauda equina.F) A) and E)
G) B) and C)

Question 16

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) B) and E)
G) All of the above

Question 17

If a person fell down the steps and then developed pain down his anterior thigh into the knee, which of the following spinal nerves was probably damaged?

Accepted Answer

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

Question 18

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) B) and E)

Question 19

Reciprocal innervation

Accepted Answer

A)   is associated with the Golgi tendon reflex.
B)   stimulates antagonistic muscles.
C)   results in reduced resistance to the reflex.
D)   reinforces the withdrawal reflex.
E)   inhibits the stretch reflex.F) B) and C)
G) A) and E)

Question 20

Reflex arcs

Accepted Answer

A)   are capable of receiving a stimulus and yielding a response.
B)   are the basic structural units of the nervous system.
C)   occur primarily in the cerebral cortex of the brain.
D)   involve inhibitory neurons.
E)   do not involve the spinal cord.F) B) and E)
G) C) and D)

Exam 12: Spinal Cord and Spinal Nerves

The thickest of the meninges is the

Correct Answer
verified

If you pinch your index finger in a door, pain sensations are carried via the ____ nerve.

Correct Answer
verified

If the ventral root of a spinal nerve were cut, the regions innervated by that spinal nerve would experience complete loss of

Correct Answer
verified

The sensory root of a spinal nerve is also referred to as

Correct Answer
verified

The motor root of a spinal nerve is also referred to as the

Correct Answer
verified

There are ________ cervical spinal nerves.

Correct Answer
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Ventral rami of some spinal nerves join with each other to form a

Correct Answer
verified
D

Label component "B" on the reflex arc.

Correct Answer
verified

Stimulation of the Golgi tendon organs result in which of the following changes in the reflex arc?

Correct Answer
verified
E

Match the disorder with its description. -neuralgia

Correct Answer
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The sac surrounding the spinal cord is the

Correct Answer
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Gamma motor neurons

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

Correct Answer
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A

Correct Answer
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The conus medullaris

Correct Answer
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Match the term with the correct definition. -epidural space

Correct Answer
verified

If a person fell down the steps and then developed pain down his anterior thigh into the knee, which of the following spinal nerves was probably damaged?

Correct Answer
verified

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

Correct Answer
verified

Reciprocal innervation

Correct Answer
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Reflex arcs

Correct Answer
verified

Exam 12: Spinal Cord and Spinal Nerves

The thickest of the meninges is the

Correct AnswerverifiedShow Answer

If you pinch your index finger in a door, pain sensations are carried via the ____ nerve.

Correct AnswerverifiedShow Answer

If the ventral root of a spinal nerve were cut, the regions innervated by that spinal nerve would experience complete loss of

Correct AnswerverifiedShow Answer

The sensory root of a spinal nerve is also referred to as

Correct AnswerverifiedShow Answer

The motor root of a spinal nerve is also referred to as the

Correct AnswerverifiedShow Answer

There are ________ cervical spinal nerves.

Correct AnswerverifiedShow Answer

Ventral rami of some spinal nerves join with each other to form a

Correct AnswerverifiedD

Label component "B" on the reflex arc.

Correct AnswerverifiedShow Answer

Stimulation of the Golgi tendon organs result in which of the following changes in the reflex arc?

Correct AnswerverifiedE

Match the disorder with its description. -neuralgia

Correct AnswerverifiedShow Answer

The sac surrounding the spinal cord is the

Correct AnswerverifiedShow Answer

Gamma motor neurons

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedA

Correct AnswerverifiedShow Answer

The conus medullaris

Correct AnswerverifiedShow Answer

Match the term with the correct definition. -epidural space

Correct AnswerverifiedShow Answer

If a person fell down the steps and then developed pain down his anterior thigh into the knee, which of the following spinal nerves was probably damaged?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Reciprocal innervation

Correct AnswerverifiedShow Answer

Reflex arcs

Correct AnswerverifiedShow Answer

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D

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E

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A

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