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EMS Chapter25Face&N

Emergency Care & Transp. 10th Edition 2011 Jones & Bartlett

TermDefinition
air embolism The presence of air in the veins, which can lead to cardiac arrest if it enters the heart.
anisocoria Naturally occurring uneven pupil size.
blowout fracture A fracture of the orbit or of the bones that support the floor of the orbit.
conjunctiva The delicate membrane that lines the eyelids and covers the exposed surface of the eye.
conjunctivitis Inflammation of the conjunctiva.
cornea The transparent tissue layer in front of the pupil and iris of the eye.
eustachian tube A branch of the internal auditory canal that connects the middle ear to the oropharynx.
external auditory canal The ear canal; leads to the tympanic membrane.
globe The eyeball.
iris The muscle and surrounding tissue behind the cornea that dilate and constrict the pupil, regulating the amount of light that enters the eye; pigment in this tissue gives the eye its color.
lacrimal glands The glands that produce fluids to keep the eye moist; also called tear glands.
lens The transparent part of the eye through which images are focused on the retina.
mastoid process The prominent bony mass at the base of the skull about 1" posterior to the external opening of the ear.
optic nerve A cranial nerve that transmits visual information to the brain.
pinna The external, visible part of the ear.
pupil The circular opening in the middle of the iris that admits light to the back of the eye.
retina The light-sensitive area of the eye where images are projected; a layer of cells at the back of the eye that changes the light image into electrical impulses, which are carried by the optic nerve to the brain.
retinal detachment Separation of the retina from its attachments at the back of the eye.
sclera The tough, fibrous, white portion of the eye that protects the more delicate inner structures.
sternocleidomastoid muscles The muscles on either side of the neck that allow movement of the head.
subcutaneous emphysema A characteristic crackling sensation felt on palpation of the skin, caused by the presence of air in soft tissues.
temporomandibular joint (TMJ) The joint formed where the mandible and cranium meet, just in front of the ear.
tragus The small, rounded, fleshy bulge that lies immediately anterior to the ear canal.
turbinates Layers of bone within the nasal cavity.
tympanic membrane The eardrum; a thin, semitransparent membrane in the middle ear that transmits sound vibrations to the internal ear by means of auditory ossicles.
Created by: Liwa91
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