ch25. Head and Neck
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| 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)
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| anisocoria | Naturally occurring uneven pupil size
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| blowout fracture | a fracture of the orbit or of the bones that support the floor of the orbit
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| conjunctiva | the delicate membrane that lines the eyelids and covers the the exposed surface of the eye
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| cornea | the transparent tissue layer in front of the pupil and iris of the eye
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| eustachian tube | a branch of the internal auditory canal that connects the middle ear to the oropharynx
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| external auditory canal | the ear canal; leads to the tympanic membrane
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| globe | the eye
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| 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
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| lacrimal glands | the glands that produce fluids to keep the eye moist, also tear glands
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| lens | the transparent part of the eye through which images are focused on the retina
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| mastoid process | the prominent bony mass at the base of the skull about 1" posterior to the external opening of the ear.
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| optic nerve | a cranial nerve that transmits visual information to the brain
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| pinna | the exteranl visible part of the ear
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| pupil | the circular opening in the middle of the iris that admits light to the back of the eye
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| 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
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| retinal detachment | separation of the retina from its attachments at the back of the eye
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| sclera | the tough, fibrous, white portion of the eye that protects the more delicate inner structures
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| subcutaneous emphysema | a characteristic crackling sensation felt on paplation of the skin, caused by the presence of air on soft tissues
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| tragus | small, rounded , fleshy bulge that lies immediately anterior to the ear canal
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| turbinates | layers of bone within the nasal cavity
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| tympanic membrane | the eardrum, which lies between the external and middle ear
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| vitreous humor | Clear, jellylike fluid near the back of the eye
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| aqueous humor | In front of the lens is a fluid which can leak out in penetrating injuries.
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| Maxillary fractures are usually found after | blunt force high-energy impacts.
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| Signs of maxillary fractures include | Massive facial swelling, Instability of the facial bones, Misalignment of teeth
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| Fractured and avulsed teeth are common following a | facial trauma.
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| Mandible injuries are common from | the result of vehicle collisions and assaults.
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| Signs of mandible fractures include | Misalignment of the teeth,Numbness of the chin, An inability to open the mouth
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| The cricothyroid membrane lies between | the thyroid cartilage and the cricoid cartilage
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| The trachea is found | below the larynx in the anterior midline of the neck
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| What connects the oropharynx and larynx with the main passages of the lungs | trachea
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| Battle's sign (Bruising over mastoid bone) indicates | Basilar skull fracture
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| sign of a orbital blowout fracture | paralysis of upward glaze
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Created by:
mckinna
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