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Neurology System > Introduction to the NS (Physiology) > Flashcards

Introduction to the NS (Physiology) Flashcards

1
Q

What are the contents of the orbit?

A

Contents (including adipose tissue)
Eyeball
Eyelids and lacrimal apparatus
Muscles

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2
Q

What is the cornea?

A

Transparent anterior continuation of the sclera

Eyeball

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3
Q

Is the sclera transparent?

A

No

Its opaque

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4
Q

Which part of the eyeball gives the eye its colour?

A

Iris

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5
Q

Which part of the eye contains rods and cones?

A

Retina

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6
Q

Which part of the eyeball has the ability to change shape?

A

Crystallin lens

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7
Q

What are the 2 types of liquids found in the eye?

A

AH

VH

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8
Q

What are the 5 layers of the cornea?

A 
Epithelium 
Bowmans membrane 
Stroma 
Descemets layer
Endothelium
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9
Q

Describe the stroma of the cornea

A

Regularly arranged
No blood vessels
Transparent

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10
Q

What is descemets layer of the cornea?

A

Basement layer of endothelium

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11
Q

What is bowman’s membrane?

A

Basement membrane of the epithelium

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12
Q

How is the transparency of the cornea maintained?

A

Regular arrangement of collagen
No blood vessels
Endothelial layer pump to keep AH out

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13
Q

What fluid does the anterior segment of the eye contain?

A

AH

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14
Q

What is the fovea centralis?

A

Area packed with cones s provides maximum visual acuity

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15
Q

What is the optic disc

A

The optic disc or optic nerve head is the point of exit for ganglion cell axons leaving the eye.

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16
Q

What structure suspends the biconvex lens of the eye?

A

Zonules

17
Q

What is lens opacification known as?

A

Cataract

18
Q

Where is the lacrimal gland located?

A

Superiolateral to the eye

19
Q

What is the function of tear?

A

Keeps cornea moist

Washes away any particulate foreign bodies

20
Q

What can you clinically stain with to see the tear film?

A

Fluorescein

21
Q

Embryologically where do optic vesicles grow outwards from?

A

Diencephalic part of the neural tube

Neurology System (35 decks)

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