internal structures Flashcards

1
Q

what does the uvea do

A

nourish interior
immune response
lens accommodation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are some characteristics of the iris

A

Anterior portion of the uvea
Diaphragm in front of lens
Has pupil in center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does iris do

A

regulate amount of light coming into eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the two zones of the iris

A

Pupillary zone-inner layer

Ciliary zone-outer zone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What two things can change eye color

A

Inflammation

Neoplasia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the purpose of the corpora nigra

A

acts as a shade

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Where is the ciliary body

A

middle portion of uvea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does the ciliary body do

A

Produce aqueous humor

anchor for lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the aqueous humor

A

Fills the anterior/postior chambers
Nutrition to lens and cornea
Waste sink
balance inflow/outflow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

how is aqueous humor produced activly

A

active production by selective transport by carbonic anhydrase and Na+K+ATPase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Where does AqH outflow through mostly

A

iridocorneal angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does the choroid do

A

provide O2 and nutrition to retina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Where is the chorid

A

Between sclera and retina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is in the uvea

A

iris
ciliary body
Choroid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does the tapetum do

A

Reflect light to interact with retina a second time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What kind of tapetum do carnivores have

A

Cellular

17
Q

What kind of tapetum do herbivores have

A

Fibrous

18
Q

What do blood ocular barriers do

A

Maintain ocular privilege

limit damage to ocular structures by systemic conditions

19
Q

What does the tapetum do

A

Reflect light to interact with retina a second time

20
Q

What kind of tapetum do carnivores have

A

Cellular

21
Q

What kind of tapetum do herbivores have

A

Fibrous

22
Q

What do blood ocular barriers do

A

Maintain ocular privilege

limit damage to ocular structures by systemic conditions

23
Q

What are zonules

A

ligaments that suspend lens

24
Q

What is the largest structure in the eye

A

viterous

25
Q

What is the vitreous

A

Hyrdrogel of hyaluronic acid and water

26
Q

What is the primary viteous

A

Vitreous is a blood vessel
Hyloid artery
Gives glucose, O2 to developing lens

27
Q

What is the secondary vitreous

A

Gell that is between the blood vessels of the primary vitreous

28
Q

What is the tertiary vitreous

A

Zonules that hold lens in place