Question 1

A nurse administers pilocarpine eye drops.The nurse instructs the patient to press on the nasolacrimal duct for 30 seconds because the medication can have some systemic side effects,such as affecting the heart rate.Explain the rationale for pressing on the nasolacrimal duct.

Accepted Answer

The nasolacrimal duct connects the eye t...

Question 2

Discuss the path of nerve impulses from the spiral organ (organ of Corti)to the primary auditory cortex in the brain.

Accepted Answer

Auditory signals travel through the coch...

Question 3

What cranial nerve carries information about hearing and head movement to the brain?

Accepted Answer

A)  vestibulocochlear nerve (CN VIII) 
B)  trigeminal nerve (CN IV) 
C)  abducens nerve (CN VI) 
D)  trochlear nerve (CN V)

Question 4

The ability of the lens to change its shape from flattened to round is known as:

Accepted Answer

A)  accommodation.
B)  inversion.
C)  convergence.
D)  refraction.

Question 5

Six extrinsic eye muscles,including four rectus muscles and two oblique muscles,control the movement of each eye.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following parts of the eye refract light to focus it on the retina?

Accepted Answer

A)  sclera and choroid
B)  cornea and lens
C)  pupil and iris
D)  ciliary body and suspensory ligaments

Question 7

Explain the function of the pharyngotympanic (auditory)tube.

Accepted Answer

The pharyngotympanic tube serves to equalize air pressure on either side of the tympanic membrane.Normally closed and flattened,it opens briefly when we yawn or swallow.

Question 8

Describe how light is refracted and focused on the retina in an emmetropic eye.

Accepted Answer

The greatest degree of refraction occurs...

Question 9

What taste sensation results when sodium ions enter gustatory cells through sodium ion channel receptors,and the cell depolarizes?

Accepted Answer

A)  salty
B)  bitter
C)  sour
D)  umami

Question 10

The startle reflex occurs when unexpected sounds reach the:

Accepted Answer

A)  midbrain.
B)  pons.
C)  thalamus.
D)  hypothalamus.

Question 11

The receptor cells for static equilibrium are located in the:

Accepted Answer

A)  otolithic membrane of the utricle and saccule of the vestibule.
B)  spiral organ (organ of Corti) of the cochlea.
C)  maculae of the utricle and saccule of the vestibule.
D)  ampullae of the semicircular canals. C

Question 12

Determine how an upper respiratory infection can impact the ear.

Accepted Answer

The pharyngotympanic tube connects the m...

Question 13

What region of the retina contains a high density of photoreceptor cells and allows for extremely detailed vision?

Accepted Answer

A)  optic disc
B)  ora serrata
C)  fovea centralis
D)  ciliary body

Question 14

Where is the primary gustatory cortex located?

Accepted Answer

A)  frontal lobe
B)  occipital lobe
C)  parietal lobe
D)  temporal lobe

Question 15

The loudness of sound is determined by the vibrations of the:

Accepted Answer

A)  tectorial membrane.
B)  otoliths.
C)  scala vestibuli.
D)  basilar membrane.

Question 16

The function of the pharyngotympanic (auditory)tube is to equalize air pressure on both sides of the tympanic membrane.

Accepted Answer

A) True 
 B)False

Question 17

Which cell has receptors specialized to detect different tastes?

Accepted Answer

A)  basal cell
B)  gustatory cell
C)  supporting cell
D)  olfactory cell

Question 18

What equalizes pressure on both sides of the tympanic membrane?

Accepted Answer

A)  external auditory canal (external acoustic meatus) 
B)  round window
C)  oval window
D)  pharyngotympanic tube (auditory tube)  D

Question 19

Discuss the function of the auditory ossicles.

Accepted Answer

The ossicles play an important role in a...

Question 20

What type of photoreceptor cell perceives color?

Accepted Answer

A)  rod
B)  bipolar cell
C)  cone
D)  hair cell

Exam 15: The Special Senses

A nurse administers pilocarpine eye drops.The nurse instructs the patient to press on the nasolacrimal duct for 30 seconds because the medication can have some systemic side effects,such as affecting the heart rate.Explain the rationale for pressing on the nasolacrimal duct.

Correct AnswerverifiedThe nasolacrimal duct connects the eye t...View AnswerShow Answer

Discuss the path of nerve impulses from the spiral organ (organ of Corti)to the primary auditory cortex in the brain.

Correct AnswerverifiedAuditory signals travel through the coch...View AnswerShow Answer

What cranial nerve carries information about hearing and head movement to the brain?

Correct AnswerverifiedShow Answer

The ability of the lens to change its shape from flattened to round is known as:

Correct AnswerverifiedShow Answer

Six extrinsic eye muscles,including four rectus muscles and two oblique muscles,control the movement of each eye.

Correct AnswerverifiedShow Answer

Which of the following parts of the eye refract light to focus it on the retina?

Correct AnswerverifiedShow Answer

Explain the function of the pharyngotympanic (auditory)tube.

Correct AnswerverifiedThe pharyngotympanic tube serves to equalize air pressure on either side of the tympanic membrane.Normally closed and flattened,it opens briefly when we yawn or swallow.

Describe how light is refracted and focused on the retina in an emmetropic eye.

Correct AnswerverifiedThe greatest degree of refraction occurs...View AnswerShow Answer

What taste sensation results when sodium ions enter gustatory cells through sodium ion channel receptors,and the cell depolarizes?

Correct AnswerverifiedShow Answer

The startle reflex occurs when unexpected sounds reach the:

Correct AnswerverifiedShow Answer

The receptor cells for static equilibrium are located in the:

Correct AnswerverifiedC

Determine how an upper respiratory infection can impact the ear.

Correct AnswerverifiedThe pharyngotympanic tube connects the m...View AnswerShow Answer

What region of the retina contains a high density of photoreceptor cells and allows for extremely detailed vision?

Correct AnswerverifiedShow Answer

Where is the primary gustatory cortex located?

Correct AnswerverifiedShow Answer

The loudness of sound is determined by the vibrations of the:

Correct AnswerverifiedShow Answer

The function of the pharyngotympanic (auditory)tube is to equalize air pressure on both sides of the tympanic membrane.

Correct AnswerverifiedShow Answer

Which cell has receptors specialized to detect different tastes?

Correct AnswerverifiedShow Answer

What equalizes pressure on both sides of the tympanic membrane?

Correct AnswerverifiedD

Discuss the function of the auditory ossicles.

Correct AnswerverifiedThe ossicles play an important role in a...View AnswerShow Answer

What type of photoreceptor cell perceives color?

Correct AnswerverifiedShow Answer

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The nasolacrimal duct connects the eye t...
View Answer

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Auditory signals travel through the coch...
View Answer

Correct Answer
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The pharyngotympanic tube serves to equalize air pressure on either side of the tympanic membrane.Normally closed and flattened,it opens briefly when we yawn or swallow.

Correct Answer
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The greatest degree of refraction occurs...
View Answer

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C

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The pharyngotympanic tube connects the m...
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D

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The ossicles play an important role in a...
View Answer

Correct Answer
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