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Anat 1 > Sense organs > Flashcards

Sense organs Flashcards

1
Q

Microvilli from gustatory cells project through this structure.

A

Taste pore

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2
Q

The sensation of taste involves

A

chemicals binding to microvilli.

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3
Q

Sensory receptors for taste are called

A

Gustatory epithelial cells

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4
Q

Gustatory cells are located in all of the following areas except

A

on the apical surface of vallate papillae on the tongue.

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5
Q

Filaments of the olfactory nerve synapse with these cells of the olfactory tract.

A

mitral cells

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6
Q

Filaments that pass through the olfactory foramina of the cribriform plate belong to

A

axons of the olfactory sensory neurons.

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7
Q

Region of the forebrain overlying the cribriform plate of the ethmoid.

A

olfactory bulb

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8
Q

The eyelids house all of the following except the

A

lacrimal sac

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9
Q

The muscle that opens the eye is the

A

Levator palpebrae superioris

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10
Q

The oil component found in tears is produced by the

A

tarsal glands

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11
Q

Transparent mucous membrane covering the inner surface of the eyelid.

A

conjunctiva

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12
Q

Of the following glands, which does not help keep the anterior part of the eye from drying out?

A

Lacrimal Caruncle

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13
Q

Where do tears drain?

A

into nasal cavity

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14
Q

The superior oblique muscle turns the eye both laterally and

A

inferiorly

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15
Q

the transparent portion of the fibrous layer of eye

A

Cornea

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16
Q

anterior segment, is filled with …

A

aqueous humor.

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17
Q

the region of the retina that contains only cones and provides maximal visual acuity.

A

Fovea centralis

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18
Q

Which of the following lies closest to the anterior pole of the eye?

A

center of the cornea

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19
Q

Transparent structure of the eye containing regularly aligned collagen fibers.

A

Cornea

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20
Q

Ordinarily, it is not possible to transplant tissues from one person to another without rejection, yet corneas can be transplanted without risk of rejection. This is because the cornea

A

has no blood supply, except around the periphery

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21
Q

The melanin-containing layer of the eye’s vascular tunic is called the

A

Choroid

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22
Q

Which of the following controls the amount of light entering the eye?

A

dilator/sphincter pupillae muscle

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23
Q

Fluid filling the posterior segment of the eye.

A

Vitreous humor

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24
Q

There are three layers of neurons in the retina. Which of the following neurons have axons that form the optic nerves?

A

ganglion cells

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25
Q

Which of the following structures in the eye are pigmented?

A

Retina

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26
Q

The ora serrata is a

A

part of the retina.

27
Q

Which of the following areas has the highest concentration of cones?

A

Fovea Centralis

28
Q

structure that is important in equalizing air pressure on both sides of the eardrum.

A

Pharyngotympanic tube

29
Q

boundary between the external and middle ear.

A

Tympanic membrane

30
Q

middle ear ossicle that is known as the stirrup.

A

Stapes

31
Q

structure that contains receptors for rotational acceleration.

A

Semicircular canals

32
Q

external auditory canal that surrounds opening of external acoustic meastus ..

A

Pinna

33
Q

The transmission of sound vibrations through the external acoustic meatus occurs chiefly through

A

air

34
Q

The external ear consists of…

A

Pinna, Helix, Lobule

35
Q

The external ear consists of each of the following structures except the

A

vestibule

36
Q

The ossicle that is shaped like the stirrup of a saddle is the

A

stapes

37
Q

The stapes attaches to a membrane called the

A

oval window

38
Q

The bony labyrinth is located in which portion of the temporal bone?

A

Petrous

39
Q

Endolymph is made…

A

from Perilymph

40
Q

Cochlea is made up of …

A

basilar, vestibule, tectorial

41
Q

The oval window of the ear is connected directly to which passageway?

A

Scala Vestibuli

42
Q

Endolymph-filled structure containing receptors for hearing.

A

Cochlear duct

43
Q

Receptors for hearing are located in the

A

Cohchlear duct

44
Q

The basilar membrane supports the

A

spiral organ.

45
Q

The gel-like structure embedded with the tips of cochlear hair cells is called the

A

tectorial membrane.

46
Q

The bony labyrinth structure containing the utricle and saccule is called the

A

Vestibule

47
Q

Along with the saccule, this structure senses linear acceleration.

A

Utricle

48
Q

The calcium carbonate crystals of the macula are called the

A

Otoliths

49
Q

An essential part of the maculae involved in static equilibrium is/are the

A

Otoliths

50
Q

The cristae ampullares in the inner ear are located in the

A

semicircular ducts

51
Q

The cristae in the inner ear contain the receptors for

A

rotational equilibrium.

52
Q

Hair cells are receptor cells for

A

both hearing and equilibrium

53
Q

Gustatory epithelial cells can be replaced if they are burned or scraped off during eating.

A

True

54
Q

Bipolar olfactory sensory neurons undergo continual renewal and replacement.

A

True

55
Q

Lacrimal fluid is produced by the lacrimal sac in the medial canthus of the eye.

A

false

56
Q

The superior oblique muscle of the eye enables the eye to look upward and laterally.

A

false

57
Q

The transparency of the cornea is due to the presence of air-filled corneal epithelial cells.

A

false

58
Q

The cone-filled region of the retina surrounding the fovea centralis is called the macula lutea.

A

true

59
Q

Light entering the eye passes first to the rod and cone cells, then to bipolar cells, and finally to ganglion cells adjacent to the pigmented retina.

A

false

60
Q

The incus bridges the gap between the stapes connected to the oval window and the malleus connected to the tympanic membrane.

A

true

61
Q

The scala vestibuli is adjacent to the round window, whereas the scala tympani is adjacent to the oval window.

A

false

62
Q

The tips of cochlear hair cells are embedded in the basilar membrane.

A

false

63
Q

The vestibule of the ear lies between the semicircular canals and the cochlea.

A

true

Anat 1 (12 decks)

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