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Anatomy and Phsiology Lab > Eye > Flashcards

Eye Flashcards

1
Q

Three layers of eyeball

A

1) fibrous tunic
2) vascular tunic
3) neural tunic

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2
Q

Fibrous tunic

A

Most superficial layer of eyeball that serves solely to protect

1) sclera
2) cornea

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3
Q

Sclera

A

Covers posterior 5/6 of the eyeball

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4
Q

Cornea

A

Covers anterior 1/6 of eyeball.

Clear

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5
Q

Conjunctiva

A

Very thin membrane that covers cornea

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6
Q

Vascular tunic

A

Middle layer of eyeball made of:

1) choroid
2) ciliary body
3) iris

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7
Q

Choroid

A

Deep to sclera. Dark purple layer that traps incoming light

Nourishes inner layers

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8
Q

Ciliary body

A

Thickened anterior portion surrounding lens

Contains ciliary muscle and ciliary processes

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9
Q

Ciliary processes

A

Protrusions of ciliary body

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10
Q

Ora serrata retina

A

Posterior “serrated” edge where ciliary muscle and retina meet

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11
Q

Iris

A

Colored part of eyeball that regulates amount of light that can entire pupil

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12
Q

Neural tunic

A

Also called retina

Neuron rich membrane that lines posterior 2/3 of eyeball

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13
Q

What type of neurons are abundant in retina?

A

Bipolar neurons

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14
Q

Axons of retinal neurons converge at…?

A

Blind spot (optic disc)

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15
Q

Retinal neurons exit eyeball as..?

A

Cranial nerve 2

The optic nerve m

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16
Q

Optic nerve

A

Extension on back of eye

17
Q

Lens

A

Clear connective tissue behind the iris

Focuses for vision through contraction of ciliary muscles

18
Q

Suspensory ligaments

A

Anchors lens to ciliary muscle

White strands around lens

19
Q

Cavities of eye:

A

Posterior cavity

Anterior cavity

20
Q

Posterior cavity

A

Large open space in eye that extends from retina and lens

21
Q

Gel that fills posterior cavity

A

Vitreous humor

22
Q

Anterior cavity

A

Area between lens and cornea

Separates into anterior chamber and posterior chamber

23
Q

Watery fluid that fills anterior cavity

A

Aqueous humor

24
Q

Anterior chamber of anterior cavity

A

Located between cornea and iris

25
Q

Posterior chamber of anterior cavity

A

Located between iris and lens

Tiny triangular cavity

Anatomy and Phsiology Lab (10 decks)

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