Question 1

Reflexes

Accepted Answer

A)   are homeostatic.
B)   are not homeostatic.
C)   are voluntary conscious responses to a stimulus.
D)   are integrated in the spinal cord, but not the brain.
E)   are integrated in the brain, but not the spinal cord.F) None of the above
G) C) and E)

Question 2

Match the action with the specific reflex.
-Allows for the coordinated contraction and relaxation of opposing muscle groups

Accepted Answer

A)   Stretch reflex
B)   Golgi tendon reflex
C)   Withdrawal reflex
D)   Crossed extensor reflex
E)   Reciprocal innervationF) A) and B)
G) None of the above

Question 3

The spinal cord begins at the ________.

Accepted Answer

A)   cerebellum
B)   medulla oblongata
C)   foramen magnum
D)   conus medullaris
E)   1st cervical vertebraeF) C) and E)
G) All of the above

Question 4

Adduction of the thigh involves the ________ nerve.

Accepted Answer

A)   peroneal
B)   femoral
C)   obturator
D)   pudendal
E)   tibialF) A) and D)
G) None of the above

Question 5

Myelin is essentially the endoneurium of myelinated axons.

Accepted Answer

A) True 
 B)False

Question 6

The thickest of the meninges is the ________.

Accepted Answer

A)   pia mater
B)   arachnoid mater
C)   subdural space
D)   subarachnoid space
E)   dura materF) A) and C)
G) A) and B)

Question 7

The sciatic nerve is composed of the

Accepted Answer

A)   femoral nerve and the tibial nerve.
B)   tibial nerve and the common fibular nerve.
C)   femoral nerve and the obturator nerve.
D)   common fibular nerve and the pudendal nerve.
E)   superior gluteal and inferior gluteal.F) A) and B)
G) A) and C)

Question 8

The reflex that prevents excessive tension in a muscle is the ________ reflex.

Accepted Answer

A)   stretch
B)   withdrawal
C)   Golgi tendon
D)   reciprocal
E)   crossed extensorF) A) and E)
G) A) and D)

Question 9

Which of the following sensory functions involves neurons in the dorsal root ganglion?

Accepted Answer

A)   Smell
B)   Hearing
C)   Touch
D)   Taste
E)   VisionF) B) and D)
G) B) and E)

Question 10

A man was in an accident during which his spinal cord was severed between C6 and C7. Which of the following would NOT be a consequence of this injury?

Accepted Answer

A)   Loss of sensation in the trunk below the shoulders, the lower limbs, and portions of the arms
B)   Loss of use of the phrenic nerves and paralysis of the diaphragm
C)   Loss of movement in the lower limbs
D)   Loss of the use of the intercostals nerves, and breathing would be affected because the intercostals muscles would be paralyzed
E)   Loss of touch sensation on the lower lumbar region.F) A) and E)
G) B) and D)

Question 11

Match the nerve or plexus with its appropriate description.
-Tibial 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 nervesF) B) and E)
G) C) and D)

Question 12

The ________ is the basic functional unit of the nervous system and is capable of receiving a stimulus and producing a response.

Accepted Answer

The answer of The ________ is the basic functional unit...

Question 13

Structurally, the simplest reflex is the ________.

Accepted Answer

A)   stretch reflex
B)   Golgi tendon reflex
C)   reciprocal reflex
D)   alternating reflex
E)   withdrawal reflexF) C) and D)
G) B) and C)

Question 14

-What does "A" represent?

Accepted Answer

A)   Spinal nerves
B)   Conus medullaris
C)   Cervical enlargement
D)   Filium terminale
E)   Cauda equinaF) C) and D)
G) B) and C)

Question 15

If reciprocal innervation failed during a stretch reflex, the consequence might be that

Accepted Answer

A)   the overall movement would be diminished due to opposing muscles contracting simultaneously.
B)   the overall movement would be exaggerated due to the lack of regulation from opposing muscle contraction.
C)   the complete loss of movement due to lack of stimulation of the effector muscle.D) A) and C)
E) A) and B)

Question 16

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

Question 17

You go to the movies after a long day and you begin to nod off as soon as the movie starts. Your head starts to lower a little, but a reflex causes your head to rise. This is called the ________ reflex.

Accepted Answer

A)   tendon
B)   crossed extension
C)   withdrawal
D)   stretch
E)   flexor (withdrawal) F) B) and C)
G) C) and E)

Question 18

Doctor Johansson wants to test a patient's reflexes by briskly striking the patellar tendon with a reflex hammer. Which reflex is Dr. Johansson testing?

Accepted Answer

A)   Golgi tendon reflex
B)   Withdrawal reflex
C)   Knee-jerk reflex
D)   Crossed extensor reflex
E)   Reciprocal innervationF) D) and E)
G) A) and C)

Question 19

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) None of the above

Question 20

Where is cerebrospinal fluid found around the spinal cord?

Accepted Answer

A)   Subdural space
B)   Epidural space
C)   Thecal sac
D)   Subarachnoid spaceE) A) and B)
F) A) and C)

Exam 12: Spinal Cord and Spinal Nerves

The sciatic nerve is composed of the

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The perineurium

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If reciprocal innervation failed during a stretch reflex, the consequence might be that

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Myelin is essentially the endoneurium of myelinated axons.

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The thickest of the meninges is the ________.

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Adduction of the thigh involves the ________ nerve.

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Match the nerve or plexus with its appropriate description. -Tibial nerve

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The spinal cord begins at the ________.

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The ________ is the basic functional unit of the nervous system and is capable of receiving a stimulus and producing a response.

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Match the action with the specific reflex. -Allows for the coordinated contraction and relaxation of opposing muscle groups

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You go to the movies after a long day and you begin to nod off as soon as the movie starts. Your head starts to lower a little, but a reflex causes your head to rise. This is called the ________ reflex.

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The reflex that prevents excessive tension in a muscle is the ________ reflex.

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A man was in an accident during which his spinal cord was severed between C6 and C7. Which of the following would NOT be a consequence of this injury?

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Structurally, the simplest reflex is the ________.

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Doctor Johansson wants to test a patient's reflexes by briskly striking the patellar tendon with a reflex hammer. Which reflex is Dr. Johansson testing?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following sensory functions involves neurons in the dorsal root ganglion?

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Where is cerebrospinal fluid found around the spinal cord?

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Reflexes

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-What does "A" represent?

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