Question 1

Structurally,the simplest reflex is the

Accepted Answer

A)  stretch reflex.
B)  Golgi tendon reflex.
C)  reciprocal reflex.
D)  alternating reflex.
E)  withdrawal reflex.F) None of the above
G) C) and D)

Question 2

-What does "D" represent?

Accepted Answer

A)  central canal
B)  ventral root
C)  dorsal root ganglion
D)  spinal nerve
E)  dorsal rootF) A) and B)
G) B) and D)

Question 3

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) None of the above
G) A) and C)

Question 4

An injury to the wrist that results in edema in the carpal tunnel would compress the

Accepted Answer

A)  axillary nerve.
B)  radial nerve.
C)  musculocutaneous nerve.
D)  ulnar nerve.
E)  median nerve.F) All of the above
G) A) and D)

Question 5

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) C) and E)

Question 6

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 B)

Question 7

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) None of the above
G) B) and D)

Question 8

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

Question 9

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...

Question 10

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) C) and D)
G) None of the above

Question 11

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) A) and B)
G) None of the above

Question 12

The spinal cord begins at the

Accepted Answer

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

Question 13

Match the term with the 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 C)
G) A) and E)

Question 14

What is found in the dorsal root ganglion?

Accepted Answer

A)  The cell bodies of multipolar motor neurons.
B)  The cell bodies of pseudo-unipolar sensory neurons.
C)  The cell bodies of multipolar interneurons.
D)  The cell bodies of bipolar sensory neurons.E) A) and D)
F) A) and B)

Question 15

In the PNS,nerves are held together by

Accepted Answer

The answer of In the PNS,nerves are held together by...

Question 16

The cutaneous sensory distribution of a spinal nerve can be mapped as a

Accepted Answer

A)  dermatome.
B)  plexitome.
C)  microtome.
D)  myotome.
E)  superdome.F) C) and E)
G) A) and E)

Question 17

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

Question 18

A reflex that protects limbs by removing them from painful stimuli is the

Accepted Answer

A)  stretch reflex.
B)  crossed extensor reflex.
C)  Golgi tendon reflex.
D)  alternating reflex.
E)  withdrawal reflexF) D) and E)
G) C) and E)

Question 19

-Label component "E" on the reflex arc.

Accepted Answer

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

Question 20

Match the disorder with its description.
-sciatica

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

Exam 12: Spinal Cord and Spinal Nerves

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

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Match the term with the correct definition. -dura mater

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Structurally,the simplest reflex is the

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

Correct AnswerverifiedShow Answer

-What does "D" represent?

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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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Match the disorder with its description. -sciatica

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The cutaneous sensory distribution of a spinal nerve can be mapped as a

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

Correct AnswerverifiedShow Answer

An injury to the wrist that results in edema in the carpal tunnel would compress the

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A reflex that protects limbs by removing them from painful stimuli is the

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-Label component "E" on the reflex arc.

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The spinal cord begins at the

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Gamma motor neurons

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Match the nerve to the correct function. -median nerve

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What is found in the dorsal root ganglion?

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In the PNS,nerves are held together by

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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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Match the disorder with its description. -neuralgia

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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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