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6:7 Eye and Ear word

Eye and Ear Key Terms

TermDefinition
aqueous humor Is a clear, watery fluid that fills the space between the cornea and iris, It helps maintain the forward curvature of the eyeball and refracts (bends to light rays)
conjunctiva mucous membrane that lines the eyelids and covers the front of the eye for protection and lubrication
IRIS color portion of the eye. Located behind the cornea
LACRIMAL GLANDS They produce tears, which moisten cleanse the eye.
PUPIL the opening in the center of the iris
REFRACTS Meaning (bends)
RETINA The innermost layer of the eye. It is made of many layers of nerve cells, which transmit the light impulses to the optic nerve
SCLERA The outermost layer of the eye, tough connective tissue. The white part of the eye
VITREOUS HUMOR jellylike substance that fills the area behind the lens. It helps maintain the shape of the eyeball. It refracts (bends) to light rays.
CORNEA CIRCULAR, TRANSPARENT PART OF THE FRONT OF THE EYE. It allows light rays to enter the eye
CONES nerve cells that is sensitive to color and used while it is lightness. Located in the retina area
RODS Nerve cells used for vision when it is dark or dim. Rods are in the retina
LENS is the circular structure located behind the pupil. It refracts(bends) to light rays do the rays focus on the retina.
pinna or auricle ear visible part of the ear, elastic cartilage covered by skin
auditory canal visible external canal leading into the ear
cermen ear wax, the was protects the ear
tympanic membrane separates the outer ear from the middle ear. It vibrates the sound waves to middle ear.
Ossicles 3 bones malleus, the incus, and the stapes. The transmit sound from tympanic membrane to inner ear
Eustachian tube connects the middle ear to pharynx. helps equalizes the air pressure
vestibule first part of the inner ear, that is an entrance into the cochlar
cochlea shaped like a snail's shell, it has the organ of corti, receptor of sound waves
Semicircular canals located in the inner ear, delicate hair-like cells that bend when liquids moves with head and body movements
Created by: healthjuniors