Chapter 25: Face and Neck Injuries Flashcards
The presence of air in the veins, which can lead to cardiac arrest if it enters the heart
air embolism
Naturally occurring uneven pupil size
anisocoria
A fracture of the orbit or of the bones that support the floor of the orbit
blowout fracture
The delicate membrane that lines the eyelids and covers the exposed surface of the eye
conjunctiva
The transparent tissue layer in front of the pupil and iris of the eye
cornea
A branch of the internal auditory canal that connects the middle ear to the oropharynx
eustachian tube
The ear canal; leads to the tympanic membrane
external auditory canal
The eyeball
globe
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
iris
The glands that produce fluids to keep the eye moist; also called tear glands
lacrimal glands
The transparent part of the eye through which images are focused on the retina
lens
The prominent bony mass at the base of the skull about 1” posterior to the external opening of the ear.
mastoid process
A cranial nerve that transmits visual information to the brain
optic nerve
The external, visible part of the ear
pinna
The circular opening in the middle of the iris that admits light to the back of the eye
pupil
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
retina
Separation of the retina from its attachments at the back of the eye
retinal detachment
The tough, fibrous, white portion of the eye that protects the more delicate inner structures
sclera
The muscles on either side of the neck that allow movement of the head
sternocleidomastoid muscles
A characteristic crackling sensation felt on palpation of the skin, caused by the presence of air in soft tissues
subcutaneous emphysema
The joint formed where the mandible and cranium meet, just in front of the ear
temporomandibular joint
The small, rounded, fleshy bulge that lies immediately anterior to the ear canal
tragus
Layers of bone within the nasal cavity
turbinates
The eardrum, which lies between the external and middle ear
tympanic membrane
