Anatomical Organization of Eye

Question 1

sclera

Answer 1

tough, white tunic on the posterior 5/6 of the eye,

Question 2

cornea

Answer 2

transparent layer on the anterior 1/6 of the eye, allows light to enter the eyeball.

Question 3

Uvea

Answer 3

middle vascular layer:
choroid
ciliary body
iris

Question 4

ciliary body

Answer 4

located between the choroid and the iris, provides attachment for the lens and contain ciliary muscle,

Question 5

iris

Answer 5

anterior part) densely pigmented structure with centrally located aperture (pupil), allowing light to get inside the eye

Question 6

Retina

Answer 6

– innermost layer

Question 7

visual retina

Answer 7

(optic part) – posterior and lateral part, sensitive to visual light,

Question 8

non-visual retina

Answer 8

anterior part, covers the internal surface of the ciliary body and the iris.

Question 9

Lens

Answer 9

transparent biconvex structure held in position by suspensory ligaments (zonular fibers) which are attached to the ciliary body; helps to refract light to be focused on the retina.

Question 10

Optic disc

Answer 10

point where the axons of ganglion cells leave the eye to form the optic nerve (blind spot)

Question 11

Macula lutea

Answer 11

yellow spot) – circular portion of the retina located lateral to the optic disc, containing fovea centralis

Yellow color –> high concentration of caratenoids, zeaxanthin

Question 12

Fovea

Answer 12

central depression in the macula; area of most acute vision.

Question 13

Anterior

Answer 13

between cornea & iris, filled with aqueous humor.

Question 14

Posterior

Answer 14

between iris & lens, filled with aqueous humor.

Question 15

Vitreous

Answer 15

space behind the lens, the largest chamber, filled with the gelatinous vitreous humor, forming vitreous body, holding the retina and providing support for the lens.

Question 16

Hyaloid canal

Answer 16

small transparent canal running through the vitreous body from the optic disc to the lens.