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PT204 Quiz 2

TermDefinition
Sensory Receptor this is the portion of your nervous system that actually detects a stimulus.
Special Sense this is localized in a special sense organ. these are special senses such as vision, hearing and balance, and smell
General Sense these are widely distributed throughout the body. these are non-special senses like touch, heat, cold, pain, and body position
Conjunctiva this is a thin membrane that lines the inner surface of the eyelids and covers the visible portion of the white of the eye
Lacrimal Glands these produce tears that lubricate the eye and contain an enzyme (lysozyme) that protects against infection
Sclera The outermost tunic of the eye made of tough connective tissue
Choroid the second tunic of the eyeball that is composed of a delicate network of connective tissue interlaced with many blood vessels. the “middle” layer of the eye between the sclera and the retina
Retina this is the eye’s actual receptor layer
Refraction this is the bending of light rays as they pass from one substance through another of a different density. light will bend differently in air than it does in water
aqueous humor a watery fluid that fills much of the eyeball at the front of the lens. this helps the cornea maintain the slight forward curve
Vitreous Body a soft, jelly-like substance that fills the entire space of the eye behind the lens
Macula Lutea this area may show degenerative changes with age
Rhodopsin a pigment within the rod of the eye
Ophthalmologist a physician who specializes in treatment of the eyes
Optic Nerve carries visual impulses from the retinal rods and cones up to the brain
Middle Ear a small, flattened space in the ear that contains three small bones
Ossicles these are the 3 small bones of the middle ear
Created by: pierce258
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