Key Terms
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Term
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Definition
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Hole's
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Marieb
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| Canthus |
the corner on each side of the eye |
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| Cilary body |
the part of the tunic of the eye, between the choroid coat and the iris,
consisting chiefly of the ciliary muscle and the ciliary processes. |
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| Ciliary Zonule |
Any of a series of delicate meridional fibers arising from the inner
surface of the ciliary disk and diverging into two groups that attach to
the capsule of the eye on the anterior and posterior surfaces of the
lens. Also called suspensory ligament of lens, Zinn's
zonule. |
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| Choroid |
a pigmented, highly vascular membrane of the eye that is continuous with
the iris and lies between the sclera and the retina, functioning to
nourish the retina and absorb scattered light. |
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| Cones |
one of the cone-shaped cells in the retina of the eye, sensitive to
color and intensity of light |
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| Conjunctiva |
the mucous membrane that lines the exposed portion of the eyeball and
inner surface of the eyelids. |
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| Iris |
the contractile, circular diaphragm forming
the colored portion of the eye and containing a circular opening, the
pupil, in its center |
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| Lacrimal apparatus |
the bodily parts which function in the production of tears including the
lacrimal glands, lacrimal ducts, lacrimal sacs, nasolacrimal ducts, and
lacrimal puncta |
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| Lacrimal glands |
an acinous gland that is about the size and shape of an almond, secretes
tears, and is situated laterally and superiorly to the bulb of the eye
in a shallow depression
on the inner surface of the frontal bone called also tear gland
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| Lacrimal canal |
a short canal leading from a minute orifice on a small elevation at the
medial angle of each eyelid to the lacrimal sac called also lacrimal
canal lacrimal canaliculus |
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| Lacrimal sac |
the dilated oval upper end of the nasolacrimal duct that is situated in a
groove formed by the lacrimal bone and the frontal process of the
maxilla, is closed at its upper end, and receives the lacrimal ducts |
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| Meibomian gland |
one of the long sebaceous glands of the eyelids that discharge a fatty
secretion which lubricates the eyelids called also tarsal gland |
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| Nasolacrimal duct |
a duct that transmits tears from the lacrimal sac to the inferior meatus
of the nose called also nasal duct |
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| Lysozyme |
An enzyme occurring naturally in egg white, human tears, saliva, and
other body fluids, capable of destroying the cell walls of certain
bacteria and thereby acting as a mild antiseptic. Also called muramidase. |
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| Pupil |
The apparently black circular opening in the center of the iris of the
eye, through which light passes to the retina. |
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| Retina |
Light sensitive layer of the eye. contains rods and cones. |
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| Rods |
One of the two types of photosensitve cells of the retina |
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| Sclera |
The firm white fibrous outer layer of the eyeball; Protects and maintains shape. |
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| Tarsal glands |
Meibomian gland |
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