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ch 25 Head/Neck
ch25. Head and Neck
| Question | Answer |
|---|---|
| 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
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