Introduction to the NS (Physiology) Flashcards Preview

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

Flashcards in Introduction to the NS (Physiology) Deck (21)
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1
Q

What are the contents of the orbit?

A

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

2
Q

What is the cornea?

A

Transparent anterior continuation of the sclera

Eyeball

3
Q

Is the sclera transparent?

A

No

Its opaque

4
Q

Which part of the eyeball gives the eye its colour?

A

Iris

5
Q

Which part of the eye contains rods and cones?

A

Retina

6
Q

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

A

Crystallin lens

7
Q

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

A

AH

VH

8
Q

What are the 5 layers of the cornea?

A
Epithelium 
Bowmans membrane 
Stroma 
Descemets layer
Endothelium
9
Q

Describe the stroma of the cornea

A

Regularly arranged
No blood vessels
Transparent

10
Q

What is descemets layer of the cornea?

A

Basement layer of endothelium

11
Q

What is bowman’s membrane?

A

Basement membrane of the epithelium

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

13
Q

What fluid does the anterior segment of the eye contain?

A

AH

14
Q

What is the fovea centralis?

A

Area packed with cones s provides maximum visual acuity

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.

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