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Assessing Eye > structure and function > Flashcards

structure and function Flashcards

1
Q

It transmits visual stimuli to the brain for interpretation and function as the organ of vision.

A

eye

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2
Q

located in the eye orbit, a round, bony hollow formed by several different bones of the skull.

A

eyeball

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3
Q

in the ____ a cushion of fats surrounds the eye.

A

orbit

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4
Q

these protects the eyeball

A

bony orbit and fat cushion

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5
Q

are two movable structures composed by skin

A

eyelids

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6
Q

what are the two types of eyelids.

A

striated and smooth

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7
Q

their purpose is to protect the EU from foreign bodies and limit the amount of light following the eye

A

striated and smooth eyelids

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8
Q

the upper eyelid is larger, more mobile and contains ___ made up of connective tissue

A

tarsal plates

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9
Q

tarsal plates contain the ___ which secrete and oily substance that lubricate the eyelid

A

meibomian glands

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10
Q

they serve to distribute tears that lubricate the surface of the eye.

A

striated and smooth eyelids

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11
Q

the eyelids joined at two points, what are these?

A

lateral(outer) canthus and medial(inner) canthus

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12
Q

the medial canthus contains the ___ two small openings that allows drainage of tears into the lacrimal system

A

puncta

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13
Q

a small fleshy mass that contains sebaceous gland

A

caruncle

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14
Q

the white space between the open eyelid is called what?

A

palpebral fissure

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15
Q

the point where the sclera meets the cornea

A

corneal limbus

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16
Q

are projections of stiff hair curving outward along the margins of the eyelids that filter dust and dirt from air entering the eye.

A

eyelashes

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17
Q

is a thin transparent, cutaneous membrane.

A

conjunctiva

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18
Q

what are the two portions of conjunctiva?

A

palpebral and bulbar portion

19
Q

it lines the inside of the eyelid.

A

palpebral conjunctiva

20
Q

cover most of the anterior eye, merging with the cornea at the limbus.

A

bulbar conjunctiva

21
Q

consist of glands and ducts that lubricate the eye

A

lacrimal apparatus

22
Q

located in the upper outer corner of the orbital cavity just above the eye, produces tears.

A

lacrimal gland

23
Q

as the lid blinks, tears wash across the eye then drain into the ___ which are visible on the upper and lower limbs at the inner canthus.

A

puncta

24
Q

tears empty into the ____ snd are then channeled into the ___ through the ____

A

lacrimal canals, nasolacrimal sac, nasolacrimal duct

25
Q

tears drain into the ____

A

nasal meatus

26
Q

the ____ are the six muscles attached to the outer surface of the eyeball

A

extraocular muscle

27
Q

what are the four rectus muscles?

A

superior, inferior, lateral and medial

28
Q

what are the two oblique muscles that are responsible for moving the eye in the direction controlled by that muscle

A

superior and inferior

29
Q

these muscles allow for parallel movements of the eyes and thus the binocular vision characteristics of humans.

A

extraocular muscle

30
Q

these muscles are supplied by three cranial nerve

A

oculomotor, trochlear and abducens

31
Q

it is composed of three separate costs or layers

A

eyeball

32
Q

what are the external layers of the eye?

A

sclera and cornea

33
Q

is a dense, protective, white covering that physically supports the internal structures of the eye.

A

sclera

34
Q

it permits the entrance of the light, which passes through the lens to the retina

A

cornea

35
Q

it is continuous anteriorly with transparent cornea( the window of the eye)

A

sclera

36
Q

it is well supplied with nerve endings, making it responsive to pain and touch

A

cornea

37
Q

because of this sensory property, contact with a wisp of cotton stimulates a blink in both eyes known as the ____

A

corneal reflex

38
Q

the middle layer, consist both an anterior portion, which includes the _____ and ____. and a posterior layer which includes the ____

A

iris and the ciliary body. choroid

39
Q

consist of muscle tissue that controls the thickness of the lens, which must be adopted to focus on objects near and far away.

A

cilliary body

40
Q

circular disc of muscle containing pigments that determines eye color

A

iris

41
Q

it is the central aperture of the iris.

A

pupil

42
Q

a biconvex, transparent, avascular, encapsulated, structure located immediately posterior to the iris.

A

lens

43
Q

attached to the cilliary body supports the position of the lens

A

suspensory ligaments

Assessing Eye (10 decks)

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