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PRELIM - Physiology > Special Senses > Flashcards

Special Senses Flashcards

(53 cards)

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1
Q

Light from both near and distant objects is focused properly on the retina. This describes a/an___eye.

  • Myopic
  • Hyperopic
  • Emmetropic
A

Emmetropic

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2
Q

Light from a distant object comes to a focal point before reaching the retina and then diverges again. This describes a/an___eye.

  • Myopic
  • Hyperopic
  • Emmetropic
A

Myopic

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3
Q

For the perception of taste in the anterior two-thirds of the tongue,

  • the chorda tympani of the glossopharyngeal nerve is involved.
  • the stimulus is detected by papillae on the tongue.
  • the lingual branch of the facial nerve is involved.
  • A, B
  • B, C
A

the stimulus is detected by papillae on the tongue.

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4
Q

Taste:

  • Trigger reflexes to increase salivation
  • Is complete when smell is intact
  • In the posterior third of the tongue is served by the glossopharyngeal nerve, CN IX.
  • A, B
  • A, B, C
A

A, B, C

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5
Q

Anosmia:

  • No smell
  • No taste
  • Both of the choices
  • Neither of the choices
A

No smell

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6
Q

Ageusia:

  • No smell
  • No taste
  • Both of the choices
  • Neither of the choices
A

No taste

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7
Q

Touch and temperature sensation of the posterior 1/3 of the tongue is served by:

  • Glossopharyngeal nerve
  • Trigeminal nerve
  • Facial nerve
A

Glossopharyngeal nerve

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8
Q

Touch and temperature sensation of the anterior 2/3 of the tongue is served by:

  • Glossopharyngeal nerve
  • Trigeminal nerve
  • Facial nerve
A

Trigeminal nerve

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9
Q

The earwax (cerumen) is important for:

  • Hearing
  • Protection
  • Both of the choices
  • None of the choices
A

Protection

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10
Q

Muscles that contract with very loud sounds:

  • Tensor tympani
  • Stapedius
  • Ossicles
  • A, B
  • A, B, C
A

A, B

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11
Q

Sensory organ for hearing:

  • Organ of Corti
  • Maculae
  • Crista ampullaris
  • A, B
  • A, B, C
A

Organ of Corti

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12
Q

Respond to linear acceleration forces - straight line changes in speed and direction but not to rotation (static equilibrium):

  • Crista ampullaris
  • Maculae
  • Organ of Corti
  • A,B
  • A,B,C
A

Maculae

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13
Q

Respond to rotatory, angular forces (dynamic equilibrium):

  • Crista ampullaris
  • Maculae
  • Organ of Corti
  • A, B
  • A, B, C
A

Crista ampullaris

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14
Q

Movement of the basilar membrane where hair cells are attached induce the sensation/s of:

  • Hearing
  • Equilibrium
  • Both of the choices
  • Neither of the choices
A

Hearing

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15
Q

Movement of the otolith causing tilting of hair cells induce the sensation/s of:

  • Hearing
  • Equilibrium
  • Both of the choices
  • Neither of the choices
A

Equilibrium

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16
Q

Hair cells at which semicircular canal will respond when we tilt our head side to side?

  • Anterior
  • Lateral
  • Posterior
A

Posterior

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17
Q

Hair cells at which semicircular canal will respond when we move our head like saying “no?”:

  • Anterior
  • Lateral
  • Posterior
A

Lateral

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18
Q

Hair cells at which semicircular canal will respond when we move our head like saying “yes?”:

  • Anterior
  • Lateral
  • Posterior
A

Anterior

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19
Q

Damage/lesion at the optic chiasm will cause heteronymous bitemporal hemianopia which
means only the nasal fields (R and L) are seen.

  • True
  • False
A

True

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20
Q

Damage/lesion at the inner ear will cause impaired balance and impaired hearing/deafness.

  • True
  • False
A

True

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21
Q

With cataract, vision is impaired because light rays cannot pass through an opaque (white) lens. The lens should be transparent for light rays to pass and strike the retina.

  • True
  • False
A

True

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22
Q

The hair cells at the basilar membrane constitute the Organ of Corti which is responsible for vestibular function.

  • True
  • False
23
Q

In myopia, the focal point (focus) is anterior to the retina which is corrected by biconcave lens.

  • True
  • False
24
Q

The right optic tract carries the image represented at the temporal field of the left eye and nasal field of the right eye.

  • True
  • False
25
Damage/lesion at the optic chiasm will cause heteronymous bitemporal hemianopsia which means only the nasal fields (R and L) are seen. - True - False
True
26
Presbyopia is characterized by blindness. - True - False
False
27
The chorda tympani, transmits impulses from taste receptors in the anterior two-thirds of the tongue, whereas the lingual branch of the glossopharyngeal nerve (IX) services the posterior third and the pharynx just behind. - True - False
True
28
The right optic nerve serves as the afferent limb for the pupillary light reflex on the same side. - True - False
False
29
With parasympathetic stimulation, the ciliary muscle contracts making the lens convex. - True - False
True
30
Sympathetic stimulation causes pupil dilatation. - True - False
True
31
With parasympathetic stimulation, the sphincter of the iris contracts causing pupillary constriction. - True - False
True
32
The left optic tract carries the complete representation of the right nasal and right temporal visual field. - True - False
True
33
The chorda tympani, a branch of the facial nerve, transmits impulses from taste receptors in the anterior two-thirds of the tongue. - True - False
True
34
Sound is heard as a result of vibrations that reach the tympanic membrane causing the ossicles to press on the inner ear fluid thereby moving the tiny hair cells stimulating nearby neurons. - True - False
False
35
Cutting the Right optic nerve: - Causes blindness in the R eye - Causes blindness in the L eye - Causes L homonymous hemianopia
Causes blindness in the R eye
36
Cutting which structure causes blindness in the temporal fields of the left and right eyes: - Optic nerve - Optic chiasm - Optic tract - Geniculocalcarine tract
Optic chiasm
37
Correction of farsightedness: - Concave lens - Convex lens - Cylindrical lens
Convex lens
38
May lead to blindness, EXCEPT: - Presbyopia - Cataract - Glaucoma - Diabetic retinopathy
Presbyopia
39
Correction of nearsightedness: - Concave lens - Convex lens - Cylindrical lens
Concave lens
40
Cutting the Left optic nerve: - Causes blindness in the R eye - Causes blindness in the L eye - Causes L homonymous hemianopia - Causes heteronymous bitemporal hemianopia
Causes blindness in the L eye
41
Impaired vision in cataract is due to: - Defect in the rods and cones - Failure of optic nerve - Failure of lens to accommodate - The lenses becoming opaque and no longer clear and transparent
Defect in the rods and cones
42
When compared with the rods of the retina, the cones: - Are more sensitive to low-intensity light - Are peripheral vision receptors - Are providing fuzzy images in dim light - Are primarily involved in color vision
Are primarily involved in color vision
43
A lesion of the lingual branch of the glossopharyngeal nerve would most likely result in: - Impaired olfactory function - Impaired vestibular function - Impaired auditory function - Impaired taste function - Nerve deafness
Impaired taste function
44
Most olfactory disorders resulting from head injuries that tear the olfactory nerves, after effects of nasal cavity inflammation will manifest as: - Ageusia - Anosmia - No taste - No sense of touch
Anosmia
45
This is referred to as the gradual loss of hearing that occurs in most people when they age: - Presbycusis - Presbyopia - Emmetropia - Myopia
Presbycusis
46
For the perception of taste in the anterior two-thirds of the tongue, - The chorda tympani of the glossopharyngeal nerve is involved. - The stimulus is detected by papillae on the tongue. - The lingual branch of the facial nerve is involved. - All of the choices are correct
The stimulus is detected by papillae on the tongue.
47
Events for hearing: - Soundwaves enter the external acoustic meatus. - The tympanic membrane vibrates. - The ossicles press on the oval window to move the inner ear fluid. - All of the choices are correct.
All of the choices are correct.
48
Excited by head movement (acceleration and deceleration), but major stimuli are rotatory (angular) movements: - Crista ampullaris - Maculae - Organ of Corti - All of the above
Crista ampullaris
49
Cutting which structure on the right side causes total blindness in the right eye? - Optic nerve - Optic chiasm - Optic tract - Geniculocalcarine tract
Optic nerve
50
Cutting which structure causes blindness in the temporal fields of the left and right eyes? - Optic nerve - Optic chiasm - Optic tract - Geniculocalcarine tract
Optic chiasm
51
Activation of parasympathetic fibers to sphincter pupillae (circular) muscles of the iris causes it to: - Contract, decreasing pupil size - Contract, increasing pupil size - A and B - None of the choices are correct
Contract, decreasing pupil size
52
Most olfactory disorders resulting from head injuries that tear the olfactory nerves, after effects of nasal cavity inflammation will manifest as: - Ageusia - Presbycusis - Impaired equilibrium - None of the choices
None of the choices
53
For the perception of taste in the anterior two-thirds of the tongue, - The chorda tympani of the glossopharyngeal nerve is involved. - The stimulus is detected by the taste buds. - The lingual branch of the facial nerve is involved. - All of the choices are correct.
All of the choices are correct.

PRELIM - Physiology (4 decks)

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