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The Eye
The Eye Definition Vocabulary
15
Physiology
11th Grade
11/18/2007

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Cards

Term
Sclera
Definition
White fibrous outer layer of eye which protects the eye and acts as an attachment site for eye muscles.
Term
Cornea
Definition
The transparent window of the eye which helps focus entering light rays
Term
Iris
Definition
Colored part of the eye that surrounds the pupil and regulates its size. It is composed of smooth muscle.
Term
Cilliary Body
Definition
Eye structure that secretes aqueous humor (watery fluid filling the anterior portion of the eye which nourishes the cornea and lens and helps maintain shape), and contains cilliary muscle
Term
Choroid
Definition
Has blood vessles to nourish eye
Term
Pupil
Definition
Circular opening in the center of the iris which allows light to enter
Term
Suspensory Ligaments
Definition
Strong fibers holding the lens in position
Term
Lens
Definition
Adjusts shape to focus in the process called accomodation
Term
Retina
Definition
Inner layer of the eye containing visual receptor cells (rods and cones, photoreceptors)
Term
Macula Lutea
Definition
Central region of the retina
Term
Fovea
Definition
Depression in the center of the macula where the sharpest vision is produced
Term
Optic disk
Definition
Where nerve fibers of the retina leave the eye and join with the optic nerve
Term
Optic Nerve
Definition
Carry impulses to occipital lobe for deciphering vision
Term
Conjunctiva
Definition
Mucous membrane lining the inside of the eyelids and covering the inside lining of the covering over the eyball
Term
Vitreous Humor
Definition
Fluid between the lens and retina of the eye which helps protect and maintain shape
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