Anatomy of the Eye Lab (Exam 3)

Question 1

What is the most superficial layer of the sclera called?

Answer 1

Episclera

Question 2

What are two functions of the ciliary body?

Answer 2

1. Accommodation = changing shape of lens + focusing
2. Production of aqueous humor

Question 3

By what nerve(s) is the iris innervated?

Answer 3

Oculomotor n.

Question 4

Through what embryonic feature did you detach the rest of the retina?

Answer 4

Optic cup

Question 5

What fluid filled the anterior chamber in life?

Answer 5

Aqueous humor

Question 6

What gives the iris its color?

Answer 6

Derived from the presence of pigment epithelial cells located primarily on its posterior surface

Question 7

Answer 7

Sclera

Question 8

Answer 8

Pupil

Question 9

Answer 9

Iris

Question 10

Answer 10

Cornea

Question 11

Answer 11

Ciliary body

Question 12

Answer 12

Lens

Question 13

Answer 13

Ciliary process

Question 14

Answer 14

Sclera

Question 15

Answer 15

Tapetum

Question 16

Answer 16

Optic disc

Question 17

Answer 17

Optic n.

Question 18

Answer 18

Sclera

Question 19

Answer 19

Sclera

Question 20

Answer 20

Cornea

Question 21

Answer 21

Limbus

Question 22

Answer 22

Choroid

Question 23

[Deepest layer]

Answer 23

Retina

Question 24

Answer 24

Ciliary body

Question 25

Answer 25

Lens

Question 26

Answer 26

Tapetum

Question 27

Answer 27

Vitreous body

Question 28

Answer 28

Vitreous body

Question 29

Answer 29

Tapetum

Question 30

Answer 30

Posterior chamber

Question 31

Answer 31

Iridocorneal angle

Question 32

Answer 32

Anterior chamber

Question 33

Define: Cornea

Answer 33

Transparent anterior portion of the fibrous tunic
Most powerful refracting layer of the eye

Question 34

Define: Ganglion Cells

Answer 34

Make up the deepest (closest to the center of the globe) layer of somata, the ganglion cell layer

Question 35

Define: Sclera

Answer 35

Posterior aspect of fibrous tunic
White of the eye

Question 36

Define: Area Cribosa

Answer 36

Portion of the sclera that is sieve-like and is pierced by the axons of the optic nerve

Question 37

Define: Tunica Fibrosa

Answer 37

[Fibrous Tunic]
Outer layer of the eyeball, made up of the posterior sclera and anterior cornea

Question 38

Define: Vitreous Body

Answer 38

Acellular gel that dills the posterior 75% of the globe

Question 39

Define: Lens

Answer 39

Transparent, proteinaceous, biconvex disk hanging between the posterior chamber and the vitreous chamber
Is a refractor of light

Question 40

Define: Pars Optica Retinae

Answer 40

The portion of the nervous tunic that is light-sensitive

Question 41

Define: Optic Disk

Answer 41

Where the axons of the optic nerve converge and penetrate the sclera

Question 42

Define: Ciliary Body

Answer 42

Anterior continuation of the uvea
Lies immediately posterior to the iris
Circumferential thickening of the vascular tunic

Question 43

Define: Anterior Uvea

Answer 43

Ciliary body and the iris

Question 44

Define: Tapetum

Answer 44

Reflective surface designed to “bounce” incoming photons back onto the retina and enhance the species’ sensitivity to low levels of light

Question 45

Define: Choroid

Answer 45

[Posterior Uvea]
Pigmented, vascular layer of the posterior portion of the eye
6 layers, one being the tapetum

Question 46

Define: Pigment Epithelium

Answer 46

Just deep to the choroid
Full of melanin granules that serve to absorb light and reduce scatter

Question 47

Define: Limbus

Answer 47

Transitional region where the sclera meets the cornea

Question 48

Define: Anterior Chamber

Answer 48

Between the iris and the cornea
Filled with aqueous humor

Question 49

Define: Filtration Angle

Answer 49

Site where the anterior surface of the iris meets the fibrous tunic
The site at which the aqueous produced by the ciliary body is reabsorbed back into circulation