Eye Structure
List the 3 cell layers that make up the neural components of the retina
1. Rods 2. Cones 3. Bipolar & Ganglionic Cells
list 3 tunics of the eye
Fibrous layer, Vascular layer, inner layer
Area where optic nerve exits the ye
Optic Disc
Cause lens to change shape
Ciliary Muscles
Inner lining of eyelid
Conjunctiva
Transparent mucous membrane that covers inner surface of eyelid and anterior surface of eyeball
Conjunctiva
list optical components of the eye
Cornea, Aqueous Humor, Lens and Vitreous Body
The conjunctiva covers the superficial surface of the cornea? T or F
False
Controls the diameter of the pupil
Iris
Where the eyelids meet in the corners is called?
Lateral commissure
composed of flattened, tightly compressed transparent cells. Suspended behind the pupil by the suspensory ligament
Lens
Contains visual receptors called rods and cones
Retina
List neural components of the eye
Retina, Optic Disc, Ora Serrata, Macula Lutea, Fovea Centralis, Blind Spot
Covers most of the eye and consists of dense collagenous connective tissue
Sclera
White part of outer (fibrous) layer
Sclera
Supportive fibrous layer that thickens along the margin of the eyelid consisting of 20-25 tarsal glands
Tarsal Plate
this carries the tears to the interior meatus of the nasal cavity
naso-lacrimal duct
The perception of vision occurs in the ________.
occipital lobe of the cerebrum
where the optic nerve leave the rear of the eye
optic dis
Central opening of the iris
pupil
Space between the cornea and iris
Anterior Chamber
Fills anterior and posterior chambers of the anterior cavity of they eye
Aqueous Humor
fluid secreted by the ciliary body into the posterior chamber
Aqueous Humor
list optical components of eye
Aqueous humor, Lens, Vitreous Humor
Posterior 5/6 of middle(vascular) layer
Choroid
highly vascular, deeply pigmented layer of tissue behind the retina
Choroid
thickened extension of the choroid, forms a muscular ring around the lens, Supports iris & lens, secretes aqueous humor
Ciliary Body
We are able to see color because of the eye contains ______.
Cones
Transparent anterior portion of outer layer
Cornea
anterior transparent region of modified sclera that lets light into the eye
Cornea
List the structures & fluids in which light passes as it travels from the cornea to the retina
Cornea, Aqueous Humor, Pupil, Lens, Vitreous Humor, Retina
Smooth muscle that controls light entering the eye
Iris
consists of lacrimal gland & series of ducts that drain the tears into the nasal cavity
Lacrimal Apparatus
Secrets Tears
Lacrimal Gland
List the sequential order of the lacrimal apparatus
Lacrimal punctum, lacrimal canal, lacrimal sac, naso-lacrimal duct
Connects lens to ciliary body
Suspensory Ligament
Tears from the lacrimal gland eventually flow through a nasolacrimal duct into the nasal cavity? T or F
True
middle layer aka uvea that consists of 3 regions
Vascular Layer
Fills posterior cavity of eye
Vitreous Humor
transparent jelly that fills a the vitreous chamber
Vitreous Humor
The area of our eye where visual acuity is best is the _____.
fovea centralis
The cornea and the sclera compose the ______ layer.
Outer
What separates the eyelids from each other?
Palpebral Fissure
consists of the retina and beginning of the optic nerve
inner layer
space between iris and lens
Posterior Chamber
forms a cup shaped outgrowth of the diencephalon, part of the brain
Retina
pigmented cells in the iris
chromatophores
