The Eye

Front 1

Eyelids or palpebrae

Back 1

thin skeletal muscles covered by folds of skin. Continuation of the skin; thier continual blinking keeps the surface of the eye lubricated and clean from debris.

Front 2

Superior levator palpebra

Back 2

muscled that moves upper eyelid.

Front 3

palpebral conjunctiva

Back 3

covers the inner surface of the eyelids

Front 4

ocular conjunctiva

Back 4

covers anterior surface of the eye and extends over the cornea.

Front 5

lacrimal apparatus

Back 5

produces, distributes, and removes tears. consists of a lacrimal gland, paired lacrimal canliculi, lacrimal sac, and nasolacrimal duct.

Front 6

lacrimal gland

Back 6

Superior and Inferior. Secrete tears.

Front 7

Lacrimal ducts

Back 7

Passageways for tears.

Front 8

Lacrim

Back 8

tear

Front 9

Tear

Back 9

Produced by the lacrima gland and used to cleanse and moisten the eye.

Front 10

Lacrimal punctum

Back 10

Opening for tear drainage. Two small pores.

Front 11

Lacrimal sac

Back 11

Nestles within the lacrimal sulcus of the orbit.

Front 12

Nasolacrimal duct

Back 12

passes through the nasolacrimal canal; delivers tears to nasal cavity.

Front 13

Medial caruncle

Back 13

Region were excess tears are collected. Very vascular soft red tissue.

Front 14

Superior, Inferior, medial, and lateral rectus muscles

Back 14

Straight muscles that move the eyeball up and down and side to side.

Front 15

Superior and inferior Obliques

Back 15

Muscles attached diagonally on the eyeball.
Inferior oblique is the shortest of the 6 muscles and rolls the eye upward.

Front 16

Trochlea

Back 16

Pulley; rolls the eyeball downward

Front 17

BlindSpot/Optic Disc

Back 17

Posterior of the eye where blood vessels and nerves enter and leave the interior of the eye. circular region just medial of the fovea.

Front 18

central Fovea

Back 18

Site of sharpest vision. contains only cones(cell type, color vision).

Front 19

Choroid

Back 19

Middle layer. Vascular layer that sepreates the fibrous and neural tunics posterior to the ora serrata. Contains an extensive network of capillarys that delivers oxygen and nutrients to the retina; also contains melanocytes.

Front 20

Retinal blood vessels

Back 20

Blood vessels associated with the retina

Front 21

Choroid layer

Back 21

Full of blood vessels

Front 22

ciliary body

Back 22

thickened region that begins deep to the junction between the cornea and the sclera.

Front 23

ciliary muscles

Back 23

smooth muscular ring that projects into the interior of the eye. smooth muscle fibers

Front 24

cornea

Back 24

most interior portion, delicate, transparent. Covering over the iris and pupil, avascular.

Front 25

Fibrous tunic

Back 25

outermost layer of the eye, consists of the sclera and cornea. Provides mechanical support and some physical protection, serves as an attachment site for extrinsic eye muscles, and contains structures that assist in the focusing process.

Front 26

Iris

Back 26

Most anterior part, a thin muscular diaphragm to regulate the amount of light that enters the pupil.

Front 27

Macula lutea

Back 27

Contains no rods; yellow spot.

Front 28

Pupil

Back 28

Central opening of the iris. Light passes through here.

Front 29

Retina

Back 29

Full of speciliazed cells. Filled with rods & cones. Innermost layer of the eye.

Front 30

Sclera/sclera coat

Back 30

outermost layer; avascular; white of the eye; tough, white portion of the eye. Clear coat that covers the ocular surface.

Front 31

suspensory ligaments

Back 31

holds the lens posterior to the iris and centered on the pupil. extend from the ciliary muscles to the lens.

Front 32

Vascular tunic

Back 32

Middle layer. Contains many blood vessels, lymphatic vessels, and the intrinsic muscles of the eye. secretes and reabsorbs the aqueous humor, controls shape of the lens, regulates amount of light the enters the eye.

Front 33

Anterior cavity

Back 33

two divisions; anterior and posterior chamber. Filled with fluid called aqueous humor.

Front 34

Anterior chamber

Back 34

divison of the anterior cavity.

Front 35

Aqueous humor

Back 35

Fluid that fills that anterior cavity.

Front 36

Canal of schlemn / scleral venous sinus

Back 36

Opening that always the aqueous humor to drain.

Front 37

ciliary process

Back 37

continuously secretes the aqueous humor

Front 38

lens

Back 38

Lies posterior to the cornea. Primary function is to focus the visual image on the photoreceptors(does so by changing shape). Consists of concentric layers of cells. Dense fibrous capsule covers the entire lens.

Front 39

Posterior Chamber

Back 39

Division of the Anterior Cavity. Filled with the aqueous humor.

Front 40

Posterior Cavity.

Back 40

Filled with a Gelatinous substance known as the vitreous humor or body.

Front 41

Vitreous body or Vitreous Humor

Back 41

Gelatnous mass. Helps stabilize the shape of the eye.