Anatomy Lab 1: Dissection Of Cow Eye

Front 1

Cornea (2)

Back 1

1. Transparent membrane that is nearly circular
2. Outer shallow groove at it's periphery and juncture with the sclera is called external scleral sulcus

Front 2

External scleral sulcus (1)

Back 2

-is the outer shallow groove that can be seen at the periphery of the cornea at its juncture with the sclera

Front 3

Conjunctiva (2)

Back 3

1. is a smooth, shinny, movable tissue covering the anterior surface of the sclera
2. it also lines the inner surfaces of the eyelid

Front 4

Limbus (2)

Back 4

1. is an area that extends from the surface through the layers of cornea, conjunctiva, and sclera
2. is the transition area containing the transitional layers b/t the transparent cornea and the conjunctiva and the white, opaque sclera

Front 5

Optic nerve (1)

Back 5

1. in bovine it is encircled by a thick, readily identifiable mass of pink muscle tissue, retractor bulbi muscle

Front 6

Equator of the eye (1)

Back 6

-separates the eye into anterior and posterior portions

Front 7

Choroid (1)

Back 7

1. a dark tissue layer which is just inner to the sclera

Front 8

Vitreous (2)

Back 8

1. transparent jelly in the center of the eye
2. is enclosed in a membrane-type of envelope

Front 9

Lens (2)

Back 9

1. transparent structure composed of lens capsule and nucleus
2. is attached to either/both the vitreous of to the anterior segment

Front 10

Lens capsule (1)

Back 10

1. the outer membrane of the lens composed of lens fibers (like and onion)

Front 11

Retina (2)

Back 11

1. posterior portion of the eyeball that is a very thin, transparent membrane
.2. may have some blood vessels

Front 12

Optic disc or optic nerve head
(5)

Back 12

1. on the nasal side of posterior pole
2. small pale spot
3. location at which the nerve fibers and the central retinal vein leave the eye
4. where the central retinal artery enters the eye
5. retina and choroid are firmly attached around its edges

Front 13

Iris (2)

Back 13

1. is a circular muscular diaphragm
2. upon contraction, changes the size of the pupil

Front 14

Pupil (1)

Back 14

-is round in the human eye

Front 15

Anterior chamber (1)

Back 15

1. is the space located b/t the iris and the cornea

Front 16

Ciliary body (3)

Back 16

1. lies posterior to and surrounds the iris
2. contains smooth muscle that contracts during accommodation causing the lens to focus at near
3. structure that manufactures the aqueous humor

Front 17

Iris root (1)

Back 17

1. the portion of the iris which attaches to the ciliary body

Front 18

Ora serrata (2)

Back 18

1. scalloped area where the ciliary body ends
2. the line that marks the anterior termination of the retina and choroid

Front 19

Pars plicata (2)

Back 19

1. the anterior 1/2 of the ciliary body
2. contains 60-70 projecting ridges called ciliary processes

Front 20

Ciliary processes (1)

Back 20

1. about 60-70 ridges that are contained in the pars plicata

Front 21

Pars plana (2)

Back 21

1. the more posterior part of the ciliary body
2. is a circle of smooth, flat tissue

Front 22

Uvea (parts)

Back 22

1. composed of the choroid, ciliary body and iris

Front 23

Anterior chamber (2)

Back 23

1. the juncture where the cornea is attached to the uvea
2. the location for the exit of the aqueous humor