Question 1

Contrast light and dark adaptation and include the role of the rods and cones.

Accepted Answer

Rods respond to low- intensity light tha...

Question 2

Ventral spinal cord roots contain _ fibers,while the dorsal roots contain fibers.

Accepted Answer

motor effe...

Question 3

Which of the following is an incorrect statement regarding the occurrence of a sensation?

Accepted Answer

A)  A generator potential in the associated sensory neuron must reach threshold.
B)  The stimulus energy must be converted into the energy of a graded potential called a transduction potential.
C)  The stimulus energy must occur within the receptor's receptive field.
D)  The stimulus energy must match the specificity of the receptor.E) C) and D)
F) A) and B)

Question 4

Nerves that carry impulses toward the CNS only are _.

Accepted Answer

A)  efferent nerves
B)  motor nerves
C)  mixed nerves
D)  afferent nervesE) All of the above
F) A) and B)

Question 5

What is the normal response of the plantar reflex? What is Babinski's sign and what does it indicate?

Accepted Answer

The plantar reflex tests the integrity o...

Question 6

Explain why your nose runs during and immediately after a good cry.

Accepted Answer

The tears flow into the lacrim...

Question 7

The synapse of the olfactory nerves with the mitral cells is called a _.

Accepted Answer

The answer of The synapse of the olfactory nerves with...

Question 8

The middle ear ossicle is the .

Accepted Answer

The answer of The middle ear ossicle is the ....

Question 9

A fall or an improperly delivered gluteal injection could result in .

Accepted Answer

A)  postpoliomyelitis muscular atrophy
B)  sciatica
C)  neurofibromatosis
D)  paresthesiaE) B) and D)
F) A) and C)

Question 10

Problems in balance may follow trauma to which nerve?

Accepted Answer

A)  accessory
B)  vestibulocochlear
C)  trigeminal
D)  abducensE) A) and B)
F) None of the above

Question 11

A patient who received a blow to the side of the skull exhibits the following signs and symptoms on that side of the face: he is unable to close his eye,and the corner of his mouth droops.Which cranial nerve has been damaged?

Accepted Answer

A)  glossopharyngeal
B)  accessory
C)  facial
D)  hypoglossalE) All of the above
F) A) and B)

Question 12

There are three layers of neurons in the retina.The axons of which of these neuron layers form the optic nerves?

Accepted Answer

A)  bipolar cells
B)  rod cells
C)  ganglion cells
D)  cone cellsE) B) and C)
F) A) and C)

Question 13

The receptor for static equilibrium is the .

Accepted Answer

A)  utricle
B)  cochlear duct
C)  semicircular canals
D)  maculaE) B) and D)
F) B) and C)

Question 14

is a protective reflex that also overrides the spinal pathways and prevents any other reflexes from using them at the same time.

Accepted Answer

The answer of is a protective reflex that also overrides...

Question 15

is the tingling sensation or numbness when blood has been cut off from an area,as when the foot "goes to sleep."

Accepted Answer

The answer of is the tingling sensation or numbness when...

Question 16

Starting at the spinal cord,the subdivisions of the brachial plexus are in order) :

Accepted Answer

A)  divisions,roots,trunks,and cords
B)  roots,trunks,divisions,and cords
C)  trunks,divisions,cords,and roots
D)  roots,divisions,cords,and trunksE) A) and D)
F) A) and C)

Question 17

Nerve fibers from the medial aspect of each eye .

Accepted Answer

A)  divide at the chiasma,with some crossing and some not crossing
B)  go to the superior colliculus only
C)  pass posteriorly without crossing over at the chiasma
D)  cross over to the opposite side at the chiasmaE) B) and C)
F) B) and D)

Question 18

The patellar "knee jerk" reflex is an example of an) .

Accepted Answer

A)  stretch reflex
B)  stress reflex
C)  extensor thrust reflex
D)  crossed- extensor reflexE) All of the above
F) B) and D)

Question 19

Feeling a gentle caress on your arm would likely involve all of the following except .

Accepted Answer

A)  Meissner's corpuscles
B)  hair follicle receptors
C)  Pacinian corpuscles
D)  tactile discsE) A) and C)
F) B) and D)

Question 20

List and describe the functions of the three cranial nerves that serve the muscles of the eye.

Accepted Answer

The three cranial nerves are: oculomotor...

Exam 13: The Peripheral Nervous System and Reflex Activity

What is the normal response of the plantar reflex? What is Babinski's sign and what does it indicate?

Correct AnswerverifiedThe plantar reflex tests the integrity o...View AnswerShow Answer

A fall or an improperly delivered gluteal injection could result in .

Correct AnswerverifiedShow Answer

is the tingling sensation or numbness when blood has been cut off from an area,as when the foot "goes to sleep."

Correct AnswerverifiedShow Answer

The patellar "knee jerk" reflex is an example of an) .

Correct AnswerverifiedShow Answer

Nerve fibers from the medial aspect of each eye .

Correct AnswerverifiedShow Answer

Feeling a gentle caress on your arm would likely involve all of the following except .

Correct AnswerverifiedShow Answer

Contrast light and dark adaptation and include the role of the rods and cones.

Correct AnswerverifiedRods respond to low- intensity light tha...View AnswerShow Answer

Starting at the spinal cord,the subdivisions of the brachial plexus are in order) :

Correct AnswerverifiedShow Answer

There are three layers of neurons in the retina.The axons of which of these neuron layers form the optic nerves?

Correct AnswerverifiedShow Answer

A patient who received a blow to the side of the skull exhibits the following signs and symptoms on that side of the face: he is unable to close his eye,and the corner of his mouth droops.Which cranial nerve has been damaged?

Correct AnswerverifiedShow Answer

Explain why your nose runs during and immediately after a good cry.

Correct AnswerverifiedThe tears flow into the lacrim...View AnswerShow Answer

is a protective reflex that also overrides the spinal pathways and prevents any other reflexes from using them at the same time.

Correct AnswerverifiedShow Answer

The middle ear ossicle is the .

Correct AnswerverifiedShow Answer

List and describe the functions of the three cranial nerves that serve the muscles of the eye.

Correct AnswerverifiedThe three cranial nerves are: oculomotor...View AnswerShow Answer

Nerves that carry impulses toward the CNS only are _.

Correct AnswerverifiedShow Answer

Problems in balance may follow trauma to which nerve?

Correct AnswerverifiedShow Answer

Which of the following is an incorrect statement regarding the occurrence of a sensation?

Correct AnswerverifiedShow Answer

Ventral spinal cord roots contain _ fibers,while the dorsal roots contain fibers.

Correct Answerverifiedmotor effe...View AnswerShow Answer

The receptor for static equilibrium is the .

Correct AnswerverifiedShow Answer

The synapse of the olfactory nerves with the mitral cells is called a _.

Correct AnswerverifiedShow Answer

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The plantar reflex tests the integrity o...
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Rods respond to low- intensity light tha...
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Correct Answer
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The tears flow into the lacrim...
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The three cranial nerves are: oculomotor...
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motor effe...
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