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Sense Organs:
Sense Organs: eye and ear
| Question | Answer |
|---|---|
| Dark opening of the eye, surrounded by the iris, through which light rays pass | pupil |
| Behind the cornea and in front of the lens and iris. It contains aqueous humor. | anterior chamber |
| Fluid produced by the ciliary body and found in the anterior chamber | aqueous humor |
| Structure on each side of the lens that connects the chorois and iris. | Ciliary body |
| Fibrous transparent layer of clear tisue that extends over the anterios portion of the eyeball | cornea |
| Tiny pit or depression in the retina that is the region of clearest vision | fovea centralis |
| Colored pigmented membrane surrounding the pupil of the eye | iris |
| Transparent, biconvex body behind the pupil of the eye | lens |
| Point at which optic nerve fibers cross in the brain | optic chiasm |
| Region at the back of the eye where the optic nerve meets the retina. Also called the blind spot. | Optic disc |
| Cranial nerve carrying impulses from the retina to the brain | optic nerve |
| Light-sensitive nerve cell layer of the eye containing photoreceptor cells | retina |
| Soft,jelly-like material behind the lens in the vitreous chamber. | vitreous humor |
| Tough, white outer coat of the eyeball | sclera |
| Responsible for color and central vision | cones |
| Essential for vision in dim light and peripheral vision | rods |
| aque/o | water |
| blephar/o | eyelid |
| conjunctiv/o | conjunctiva |
| cor/o | pupil |
| corne/o | cornea |
| cycl/o | ciliary body |
| dacry/o | tears, tear duct |
| ir/o, irid/o | iris |
| kerat/o | cornea |
| lacrim/o | tears |
| ocul/o | eye |
| ophthalm/o | eye |
| opt/o, optic/o | eye, vision |
| palpebr/o | eyelid |
| papill/o | optic disc |
| phac/o, phak/o | lens of the eye |
| pupill/o | pupil |
| retin/o | retina |
| scler/o | sclera |
| uve/o | uvea |
| vitre/o | glassy |
| ambly/o | dull, dim |
| dipl/o | double |
| glauc/o | gray |
| mi/o | smaller, less |
| mydr/o | widen, enlarge |
| nyct/o | night |
| phot/o | light |
| presby/o | old age |
| scot/o | darkness |
| xer/o | dry |
| -opia | vision |
| -opsia | vision |
| -tropia | to turn |
| Defective curvature of the cornea or lens of the eye | astigmatism |
| Farsightedness | hyperopia |
| Nearsightedness | myopia |
| Impairment of vision as a result of old age | presbyopia |
| Clouding of the lens, causing decreased vision | cataract |
| Retinal effects of diabetes mellitus include microaneurysms, hemorrhages, dilation of retinal veins, and neovacularization | diabetic retinopathy |
| Increased intraocular pressure results in damage to the retina and optic nerve with loss of vision | glaucoma |
| Localized, purulent, inflammatory staphylococcal infection of a sebaceous gland in the eyelid | hordeolum (stye or sty) |
| Visual examination of the interior of the eye | ophthalmoscopy |
| Clarity of vision is asessed | visual acuity test |
| Measures the area within which objects are seen when the eyes are fixed, looking straight ahead without movement of the head | visual field test |
| LASIK | laser in situ keratomileusis |
| OD | right eye |
| OS | left eye |
| PERRLA | pupils equal, round, reactive to light and accommodation |
| VA | visual acuity |
| VF | visual filed |
| Channel that leads from the pinna to the eardrum | auditory canal |
| Carry impulses from the inner ear to the brain | auditory nerve fibers |
| Channel between the middle ear and the nasopharynx | auditory tube, eustachian tube |
| Flap of the ear, the protruding par of the external ear; pinna | auricle |
| Waxy substance secreted by the external ear; ear wax | cerumen |
| Snail-shaped, spirally wound tube in the inner ear | cochlea |
| Fluid within the labrynth of the inner ear | endolymph |
| Second ossicle of the middle ear; anvil | incus |
| First ossicle of the middle ear; hammer | malleus |
| Sensitive auditory receptor area found in the cochlea of the inner ear | organ of corti |
| Small bone of the ear | ossicle |
| Membrane between the middle ear and the inner ear | oval window |
| Auricle; flap of the ear | pinna |
| Passages in the inner ear associated with maintaining equilibrium | semicircular canals |
| Third ossicle of the middle ear; stirrup | stapes |
| Membrane between the outer and the middle ear; eardrum | tympanic membrane |
| Central cavity of the labrynth, connecting the semicircular canals and the cochlea | vestibule |
| acous/o | hearing |
| audi/o | hearing |
| audit/o | hearing |
| aur/o, auricul/o | ear |
| cochle/o | cochlea |
| mastoid/o | mastoid process |
| myring/o | eardrum |
| ossicul/o | ossicle |
| ot/o | ear |
| salping/o | eustachian tube |
| staped/o | stapes |
| tympan/o | eardrum; tympanic membrane |
| vestibul/o | vestibule |
| -acusis, -cusis | hearing |
| -meter | instrument to measure |
| -otia | ear condition |
| Disorder of the labyrinth of the inner ear | Meniere disease |
| Inflammation of the middle ear | otitis media |
| Sensation of noises in the ears | tinnitus |
| Sensation of irregular or whirling motion either of oneself or of external objects | vertigo |
| Testing the sense of hearing | audiometry |
| Visual examination of the ear with an otoscope | otoscopy |
| Test of ear conduction using a vibration source (tuning fork) | tuning fork test |
| AD | right ear |
| AS | left ear |
| EENT | eyes, ears, nose and throat |
| ENT | ears, nose and throat |
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