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ch 25 Head/Neck

ch25. Head and Neck

Air embolism the presence of air in the viens, which can lead to cardiac arrest if it enters heart. (Air in right atrium/ ventricle leads to cardiac arrest)
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 the exposed surface of the eye
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 eye
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 the tissue gives eye color
lacrimal glands the glands that produce fluids to keep the eye moist, also 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 exteranl 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 are 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
subcutaneous emphysema a characteristic crackling sensation felt on paplation of the skin, caused by the presence of air on soft tissues
tragus small, rounded , fleshy bulge that lies immediately anterior to the ear canal
turbinates layers of bone within the nasal cavity
tympanic membrane the eardrum, which lies between the external and middle ear
vitreous humor Clear, jellylike fluid near the back of the eye
aqueous humor In front of the lens is a fluid which can leak out in penetrating injuries.
Maxillary fractures are usually found after blunt force high-energy impacts.
Signs of maxillary fractures include Massive facial swelling, Instability of the facial bones, Misalignment of teeth
Fractured and avulsed teeth are common following a facial trauma.
Mandible injuries are common from the result of vehicle collisions and assaults.
Signs of mandible fractures include Misalignment of the teeth,Numbness of the chin, An inability to open the mouth
The cricothyroid membrane lies between the thyroid cartilage and the cricoid cartilage
The trachea is found below the larynx in the anterior midline of the neck
What connects the oropharynx and larynx with the main passages of the lungs trachea
Battle's sign (Bruising over mastoid bone) indicates Basilar skull fracture
sign of a orbital blowout fracture paralysis of upward glaze
Created by: mckinna