Ch. 28 Face and Neck Injuries Flashcards
Air embolism
The presence of air in the veins, which can lead to cardiac arrest if it enters the heart.
Anisicoria
Naturally occuring uneven pupil size.
Blow-out 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 esposed surfact of the eye.
Conjunctivitis
Inflammation of the conjunctiva.
Cornea
The transparient tissue layer in front of the pupil and iris of the eye.
Eustachian tube
A tube 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 nornea 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 inch (2.5cm) posterior to the external opening of the ear.
Optic nerve
A cranial nerve (II) 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).
Retina
The light-sensitive area of the eye where images are projected; a layer of cells at the back of the eye that ganges the light image into electic 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
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 withing the nasal cavity.
Tympanic membrane
The eardrum; a thin, semitransparent membrane in the middle of the ear that transmits sound vibrations to the internal ear by means of auditory ossicles.
