Eye Flashcards
1
Q
Eye General (3)
A
Eye General
- the eyeball (globe) is in the orbit
- the eye has a
- lense
- 3 layers
- fibrous
- vascular
- retinal
- the adnexa are accessory ocular structures
- palpebrae (eyelids)
- conjunctiva
- lacrimal apparatus
2
Q
Be able to fill in this diagram
A
3
Q
Lable
A
4
Q
Sclera
A
Fibrous tunic
sclera
=posterior portion
- protexts eye and maintains shape
- insertion point for tendons and muscles
5
Q
Cornea
A
fibrous tunic
Cornea
- anterior portion of eye
- avascular transparent and convex-concave lens
- very very innervated
- 5 layers
6
Q
Identify
A
Note 2 and 4 are basement membranes
7
Q
List factors that make cornea transparent (4)
A
cornea is transparent because…
- avascular
- collagen arrangement
- proteoglycans between collagen
- Na+ pumps to transport water out
8
Q
Limbus
A
fibrous tunic
limbus
- corneoscleral junction
- area of blood vessels
- nutritive
9
Q
Iris
A
vascular tunic
Iris
- stroma- pigmented loose connective tissue
- dilator and sphincter pupillae muscles
- posterior epithelium- some species have iridic granules
- also gives pigment
- iridocorneal angle= dreinage angle
10
Q
Ciliary body
A
Ciliary body
- anterior expansion of the choroid at the level of the lense
- muscle applys tension to lense to allow focus
- surrounded by loose connective tissue
11
Q
Identify
A
12
Q
Aqueous humor: pathway
A
13
Q
Choroid
A
Vascular Tunic
Choroid
- REMEMBER tapetum lucidum makes eyes shine
14
Q
Retina (3)
A
Retina
- sensory/optical= contacts choroid
- non sensory/ ciliary= outer nonpigmented
- iridal= posterior pigmented
15
Q
Identify
A
16
Q
Layers
A
17
Q
Hw does the retina work?
A
18
Q
Path of light and perception
A
19
Q
Photoreceptors
A
20
Q
A
21
Q
Conjunctiva
A
accessory ocular structure
conjunctiva
note palpebra= meibomian glands (sebaceous)
22
Q
Accessory ocular structures
A
23
Q
Third eyelid
A
accessory occular structures
third eyelid= nictitating membrane
24
Q
lacrimal gland
A
accessory occular structure
lacrimal gland
