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MGA Exam 4 > Eye > Flashcards

Eye Flashcards

1
Q

What is the function of the vitreous chamber

A

Maintains the shape of the eye

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2
Q

What is the function of the vitreous humor?

A

Nourishes the avascular cornea

Maintains intraocular pressure

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3
Q

Aqueous humor is secreted in the ___ by ___

A

Posterior chamber

By ciliary body

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4
Q

Aqueous humor is absorbed by

A

Scleral venous channel

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5
Q

Outer layer of eye is

A

Fibrous

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6
Q

Middle layer of eye is

A

Vascular/muscular

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7
Q

Outer layer of eye contains

A

Sclera + cornea

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8
Q

Middle layer of eye contains

A

Choroid + ciliary body + iris

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9
Q

Inner layer contains

A

Retina

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10
Q

What structure allows light to enter the eye

A

Cornea

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11
Q

What nerve pierces the sclera and where specifically?

A

Optic nerve pierces sclera at the optic disc

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12
Q

What part of the eye contains general afferent nerves and vessels

A

Choroid

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13
Q

Ciliary body consists of

A

Ciliary process

Ciliary muscle

Zonular fibers

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14
Q

Ciliary muscle is under __ control

A

Parasympathethic

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15
Q

What is the function of zonular fibers

A

Attach ciliary muscles and processes to periphery of lens

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16
Q

What is the area of most acute vision?

A

Fovea centralis

17
Q

What is accomodation?

A

Process of changing lens shape to focus light from NEARBY objects on macula lutea and fovea centralis for acute vision (reading)

18
Q

Contraction of ciliary muscle –>

A

Decreases size of ciliary body

Loosens zonular fibers

19
Q

Mueller’s muscle is

A

Smooth muscle associated with the upper tarsal plate

20
Q

Mueller’s muscle is innervated by

A

Sympathethic fiers from the superior cervical ganglion

21
Q

What are tarsal/meibomian glands?

A

Glands that secrete an oily substance to increase the viscosity of tears

22
Q

Orbicularis oculi is innervated by ___

Levator palpebrae is innervated by ___

A

OO: facial nerve

LP: oculomotor nerve

23
Q

Lobes of the lacrimal gland

A

Orbital

Palpebral

MGA Exam 4 (8 decks)

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