Question 1

Match the term with its correct definition.
-Arachnoid mater

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) C) and E)
G) D) and E)

Question 2

Match the action with the specific reflex.
-Knee-jerk reflex

Accepted Answer

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

Question 3

Match the term with its correct definition.
-Dura mater

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 C)

Question 4

Match the nerve or plexus with its 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 nervesF) A) and C)
G) B) and E)

Question 5

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

Question 6

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

Question 7

-Label component "D" of the reflex arc.

Accepted Answer

A)   Sensory receptor
B)   Effector organ
C)   Sensory neuron
D)   Motor neuron
E)   InterneuronF) D) and E)
G) A) and D)

Question 8

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)   SplanchnicF) A) and B)
G) A) and C)

Question 9

The cervical region of the spinal cord lacks associated autonomic nuclei. How will a cross section of the spinal cord in this region differ from a cross section of the thoracic region?

Accepted Answer

A)   Lateral gray horns are not present in the cervical region.
B)   Ventral gray horns are smaller in the cervical region due to fewer motor nuclei.
C)   Posterior gray horns are lacking in the cervical region.
D)   There should be no difference in the appearance from one region compared to other regions.E) C) and D)
F) B) and D)

Question 10

-Label component "C" of the reflex arc.

Accepted Answer

A)   Sensory receptor
B)   Effector organ
C)   Sensory neuron
D)   Motor neuron
E)   InterneuronF) A) and B)
G) C) and D)

Question 11

Which structure makes the dorsal root different from the ventral root?

Accepted Answer

A)   The dorsal root has a ganglion.
B)   The dorsal root has a tract.
C)   The dorsal root has a nucleus.
D)   The dorsal root appears the same as the ventral root.E) A) and D)
F) B) and C)

Question 12

Match the nerve to the correct function.
-Median nerve

Accepted Answer

A)   Provides motor innervation to the biceps brachii
B)   Innervates two forearm muscles plus most of the intrinsic hand muscles
C)   Innervates all but one of the flexor muscles of the forearm and most of the hand muscles near the thumb
D)   Innervates the deltoid and teres minor muscles
E)   Innervates the triceps brachiiF) B) and E)
G) A) and E)

Question 13

Match the disorder with its description.
-Anesthesia

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

Question 14

Match the disorder with its description.
-Neuritis

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) A) and D)

Question 15

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 E)
G) B) and D)

Question 16

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.F) A) and B)
G) B) and D)

Question 17

Reflexes function in

Accepted Answer

A)   removing the body from painful stimuli.
B)   keeping the body from falling.
C)   maintaining blood pressure.
D)   maintaining blood CO2 levels.
E)   All of the choices are correct.F) B) and E)
G) A) and C)

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

Question 19

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

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

Exam 12: Spinal Cord and Spinal Nerves

-Label component "D" of the reflex arc.

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

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Which structure makes the dorsal root different from the ventral root?

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

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Match the action with the specific reflex. -Knee-jerk reflex

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The cervical region of the spinal cord lacks associated autonomic nuclei. How will a cross section of the spinal cord in this region differ from a cross section of the thoracic region?

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Match the disorder with its description. -Neuralgia

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

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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?

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-Label component "C" of the reflex arc.

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Reflexes function in

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Match the disorder with its description. -Anesthesia

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

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Match the disorder with its description. -Neuritis

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

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Match the term with its correct definition. -Dura mater

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Reflex arcs

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Match the term with its correct definition. -Arachnoid mater

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

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Match the nerve to the correct function. -Median nerve

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