click below
click below
Normal Size Small Size show me how
Blesi8e Ch11 Terms
[MA3] The Senses [Tier 01]
Term | Definition |
---|---|
accommodation | the process of the lens changing shape to permit close vision. |
amblyopia | lazy eye; a condition characterized by the inward turning of the affected eye. |
aqueous humor | a watery, transparent liquid that circulates between the anterior and posterior chambers of the eye. |
astigmatism | blurring of the vision caused by an abnormal curvature of the cornea. |
auditory | pertaining to the sense of hearing |
cataract | an opacity of the lens of the eye resulting in blindness |
cerumen | wax-like brown secretion found in the external auditory canal |
choroid | the vascular coat of the eye between the sclera and the retina |
cochlea | the snail-shaped portion of the inner ear |
conjunctiva | a mucous membrane that lines the eyelids and covers the anterior sclera of the eyeball |
cornea | the transparent extension of the sclera that lies the front of the pupil of the eye. |
enucleation | surgical excision of the eyeball |
epistaxis | nosebleed; hemorrhage from the nose |
eustachian tube | refers to the tube of the middle ear that connects to the pharynx. |
fovea centralis | a depression in the posterior surface of the retina that is the place of sharpest vision. |
glaucoma | a disease of the eye characterized by increased intraocular pressure. |
hyperopia | a defect of vision so that objects can only be seen when they are far away; farsightedness |
incus | the anvil, the middle bone of the three in the middle ear |
insidious | hidden, not apparent |
iris | the colored, contractible tissue surrounding the pupil of the eye. |
lacrimal | pertaining to the tears; the glands and ducts that secrete and convey tears. |
lens | a part of the eye that bends or refracts images onto the retina. |
malleus | the largest of the three bones of the middle ear, also called the hammer. |
Meniere's disease | a disorder of the ear characterized by nausea, vomiting, tinnitus and hearing loss |
myopia | a defect in vision so that objects can only be seen when very near; near-sightedness |
optic disc | the blind spot where the optic nerve exits from the retina of the eye. |
organ of Corti | terminal acoustic apparatus in the cochlea of the inner ear. |
otitis | inflammation of the ear; can be referenced to the external, middle or internal ear. |
otosclerosis | condition characterized by progressive deafness cause by the fixation of the stapes of the middle ear. |
polyps | a tumor with a pedicle, especially on mucous membranes, such as in the nose, rectum or intestines. |
presbycusis | impairment of the acute hearing in old age. |
presbyopia | a defect of vision in advancing age involving loss of accommodation |
pupil | the contractible opening in the center of the iris for the transmission of light. |
receptor | peripheral nerve ending of a sensory nerve that responds to stimuli |
retina | the innermost layer of the eye that receives the image formed by the lens. |
retinopathy | a degeneration of the retina caused by a decrease in blood supply. |
sclera | the white or sclerotic outer coat of the eye. |
semicircular canals | structures located in the inner ear that are responsible for maintaining equilibrium. |
sensorineural | refers to a sensory nerve |
stapes | one of the three bones of the middle ear. |
strabismus | an eye disorder caused by imbalance of the ocular muscles. |
tinnitus | a ringing or tinkling sound in the ear that is heard only by the person affected |
tympanic membrane | the ear drum |
vitreous humor | the substance that fills the vitreous body of the eye behind the lens. |