Eye Flashcards

1
Q

1st and most powerful stucture of opticql system

A

Cornea

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2
Q

Center of central vision

A

Fovea

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3
Q

Enables lense to change shape

A

Zonula

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4
Q

Middle vascular layer of the eye

A

Uvea

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5
Q

Film of the eye

A

Optic disk

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6
Q

1st part of the brain to receive visual input

A

Optic chiasm

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7
Q

Relay station of visual cortex

A

Lateral geniculate body

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8
Q

Keeps images focused on the retina

A

Lens

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9
Q

Layer of blood vessel that supplies blood to the retina

A

Choroid

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10
Q

Where aqueous humor is produced

A

Ciliary body

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11
Q

Blocked in glqucoma

A

Canal of schlemm

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12
Q

Corneal layer composed of collagen fibers, no cells, contributes to stability and strength of cornea

A

Bowmans membrane

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13
Q

Thickest layer of cornea

A

Stroma

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14
Q

Basement layer of the cornea

A

Dehcemet’s membrane

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15
Q

Blind spot of the eye

A

Optic disk

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16
Q

Area of highest visual acuity

A

Fovea

17
Q

Long sebaceous gland in tarsal plate wc creates an oily layer on the surface of the tear film preventing rapid evaporation of the tear

A

Meibomian glands

18
Q

Sweat glands emptying secretions into hair follicles

A

Gland of moil

19
Q

Smaller,modified sebaceous glands conneted with hair follicles

A

Glands of Zeis

20
Q

Tear secreting tubuloalveolar gland rich lysozyme

A

Lacrmal gland

21
Q

Action of superior rectus

A

Upward and medial movement

22
Q

Action of inferior rectus

A

Downward and medial movement

23
Q

Movement of inferior oblique

A

Upward and lateral

24
Q

Movement of superior oblique

A

Downward and lateral

25
Q

Position: defect in medial rectus

A

Abducted and depressed

26
Q

Position: defect in superior rectus

A

Abducted and depressed

27
Q

Position: defect in inferior rectus

A

Abducted and depressed

28
Q

Position: defect in inferior oblique

A

Abducted and depressed

29
Q

Position: defect in superior obique

A

Extorted

30
Q

Position: defect in lateral rectus

A

Adducted

31
Q

Internal strabismus is due to what?

A

Injury to abducens nerve

32
Q

Located in the periaqueductal gray of the midbrain at the level of the SUPERIOR COLLICULUS

A

Oculomotor nucleus

33
Q

Located on the ventral border of the periaqueductal gray of the midbrain at the level of the inferior colliculus

A

Trochlear nucleus

34
Q

Located beneath the facial colliculus in the floor of the 4th ventricle and caudal pons

A

Abducent nucleus