Eye Flashcards
Define the conjuctiva
Covers sclera and lines inside of eyelid
Define lacrimal apparatus
Produces tears that lubricate the eye
The outer layer has a layer called “the window of the eye” which is called?
The outer tunic
Three parts of the middle layer is
Ciliary body
Choroid coat
Iris
The delicate fibers, suspensory ligaments, hold this transparent part in place
Lens
Nourishes the surrounding tissue and has many pigment producing cells that’s keep out excess light
Choroid coat
Forms an internal ring around the eye and consist of muscles
Ciliary body
What parts allow accommodation to occur?
Ciliary body, choroid coat, iris
What is Accommodation
Ability of lens to adjust shape to focus the eye
Color portion of eye
Iris
White part of eye
Sclera
Liquid excreted from ciliary body?
Aqueous humor
Circular opening within iris?
Pupil
Two groups of smooth muscle that control size of pupil
Radial and circular
Eye disorder when it becomes cloudy
Cataract
Muscle used to dilate pupil so less light enters?
Circular
Muscle used to contract pupil so more light enters?
Radial
The inner layer of the eye contains the __________ which contains photoreceptors
Retina
The yellow spot in the retina is called
Macula lutea
The depression in the macula lutea is called
Fovea centralis
Fovea centralis is the region that…
Produces sharpest vision
Tears have enzyme called:
Lysosome
The cones are located around a point called
Fovea centralis
Four layers of eyelid
Skin, muscle, connective tissue, conjunctiva
