Eyeball Anatomy

Front 1

Upper and Lower eyelids

Back 1

Are the upper and lower eyelids of the eye....

Front 2

Palpebral fissure

Back 2

The slit between the upper and lower eyelids

Front 3

Ocular angles

Back 3

The corners of the eye, where the eyes unite.

Front 4

Nictitating Membrane

Back 4

Semiluner fold, it is attached at the medial ocular angle, but its lateral edge can spread over the surface of the eye if the eyeball is retracted slightly.

Front 5

Lacrimal Punctum

Back 5

(Human eye): pulling down the lower lid and examine its edge near the most medial eyelash.

Front 6

Conjunctiva

Back 6

The thin, transparent membrane that lines the inner side of the lids and reflects over the cornea.

Front 7

Cornea

Back 7

The clear covering over the iris and pupil.

Front 8

Iris

Back 8

The color of the eye.

Front 9

Pupil

Back 9

The "black space" in eye

Front 10

Orbicularis Oculi

Back 10

The muscle around the eye.

Front 11

Lacrimal gland

Back 11

the dark glandular mass that lies on the caudodorsal surface of the eyeball.

Front 12

Nasolacrimal Duct

Back 12

This enters the nasal cavity through a canal in the lacrimal bone.

Front 13

Levator palpebrae superioris

Back 13

The muscle on the top of the eye that raises the upper eyelid.

Front 14

Dorsal Oblique

Back 14

Lateral wall of the eyeball, is superior and arises from the wall of the orbit slightly rostaral to the optic foramen and goes through a connective tissue pulley (also known as a t___a).

Front 15

Trochlea

Back 15

Connective tissue pulley.

Front 16

Ventral oblique

Back 16

Inferior to the dorsal oblique and arises from the maxillary bone and attaches to the lateral surface of the eyeball ventral to the insertion of the superior oblique.

Front 17

Dorsal rectus

Back 17

Superior, attaches on the dorsal surface of the eyeball.

Front 18

Ventral rectus

Back 18

Inferior, on the ventral surface

Front 19

Medial rectus

Back 19

On the medial surface of the eye

Front 20

Lateral rectus

Back 20

On the lateral surface of the eye

Front 21

Retractor bulbi

Back 21

Passes to the eye deep to the recti, can be divided into four parts. Humans do not have this.

Front 22

Eyeball

Back 22

Enough said...the eyeball.

Front 23

Fibrous tunic

Back 23

The outer wall of the eye.

Front 24

Vascular tunic

Back 24

The dark, middle wall of the eye.

Front 25

Retina

Back 25

The whitish, inner layer of the eye.

Front 26

Sclera, Cornea, Choroid.

Back 26

* 2/3 forms the opaque ____
* 1/3 forms the transparent ____ through which light enters the eye.
* Vascular tunic is rich in blood vessels; most of this layer is a ____ that lies behind the retina and helps nourish it.

Front 27

Vitreous body and the chamber of the vitreous body

Back 27

Jelly-like mass filling the eyeball between the lens and retina is the ____. The space within it lies is the ____.

Front 28

Optic disc

Back 28

The round spot at which the OPTIC NERVE attaches to the RETINA.

Front 29

Tapetum lucidum

Back 29

Extensive section of the choroid dorsal to the obtic disc is iridescent. An area that reflects some of the light passing through the retina back onto the rods and cones and thus facilitates the abilty of the animal to see in dim light.

Front 30

Ora serrata

Back 30

White, nervous layer of the retina does not extend far into this half of the eyeball, the line of demarcation between it and the dark choroid is the ____.

Front 31

Ciliary body

Back 31

The portion of the vascular tunic that you see extending from the ora serrata toward the the lens is the _____.

Front 32

Lens

Back 32

The part of the eye that is behind the iris and fits the cornea.

Front 33

Posterior chamber

Back 33

The space between the lens and iris.

Front 34

Anterior chamber

Back 34

The space between the iris and cornea

Front 35

Aqueous Humor

Back 35

Fills the chambers with water ____, secreted by the cilary processes.