Week 3-Chapter 11 Flashcards by Cynthia Rivas

Accommodation

As it applies to vision, the process by which the ciliary muscle of the eye controls the shape of the lens for vision at near and far distance

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Anvil (incus)

Middle ear bone, or ossicle, in a chain of three ossicles of the middle ear

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Astigmatism

Irregular curvature of cornea or lens

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Aqueous humor

Watery fluid found in anterior chamber of the eye

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Amblyopia

Dimness of vision

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Anterior chamber

Space between cornea and iris

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Auricle

(1) pinna, or ear flap, of external ear (2) atrium of the heart

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Cataract

Condition in which the eye lens becomes opaque

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Ciliary body

Ligaments that suspend the eye

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Choroid coat

The middle layer of the eye

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Cochlear duct

An endolymph-filled, triangular canal containing the spiral organ of Corti

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Cerumen

A waxy or oily substance produced by ceruminous (sebaceous) glands in the lining of the outer ear. Also known as earwax

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Cochlea

Spiral cavity of the internal ear containing the organ of Corti

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Color blindness

Inability to distinguish colors

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Conjunctivitis

An inflammation of the conjunctival membranes in the front of the eye

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Deviated nasal septum

Condition in which there is a bend in the cartilage structure of the septum

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Cones

Structures in the retina of the eye sensitive to bright light and responsible for color vision

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Cornea

A clear, circular area in the very front of the sclerotic coat

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Congenital hearing loss

A birth defect in which there is hearing loss caused by prematurity, cytomegalovirus, congenital rubella, infection, neurodegenerative disorder, or family history of deafness

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Detached retina

Condition that results when the vitreous fluid contracts as it ages, pulling on the retina and causing a tear, detachment of the retina may also occur as a result of an injury

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Diabetic retinopathy

Condition caused by changes in the blood vessels in the retina of the eye, such as blood vessels that swell and leak, or abnormal blood vessels that grow on the retina, leading cause of blindness in American adults

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Epistaxis

Bloody nose usually due to a rupture of the small vessels overlying the anterior portion of the nasal system

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Diplopia

Double vision

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Extrinsic muscles

Muscles responsible for moving the eye within the orbital socket

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Dry eye

A scratchy feeling in the eyes that occurs when the tears fail to keep the eye surface adequately lubricated

Eustachian tube

Passageway from throat to middle ear, equalizes pressure

Eye strain

Discomfort when viewing something

Intrinsic muscles

Muscles that help the iris control the amount of light entering the pupil

Fovea centralis

Structure of the eye in the retina that contains the cones for color vision

Hyperopia (farsightedness)

A condition in which the focal point is beyond the retina, the eyeball is shorter than normal

Iris

Colored muscular layer surrounding the pupil of the eye

Glaucoma

Increase in intraocular eye pressure

Hammer(malleus)

A tiny bone found in the middle ear containing

Lens

Crystal structure for refraction of light rays

Ménière’s disease

Condition affecting the semicircular canals of the inner ear, causing marked vertigo (dizziness)

Miotic

Pertaining to or causing contraction of the pupil

Macula lutea

A yellow disc in the retina in which the fovea centralis is located

Muscular degeneration

Thinning of the retinal layer of the eye or leakage that can develop under the retina, disturbing sharp central vision

Myopia (nearsightedness)

Condition in which the focal point is in front of the retina

Nasal polyps

An abnormal growth that occurs in the sinus cavity

Myringotomy

Opening into the tympanic membrane

Optic disc (blind spot)

An area of the eye devoid of visual reception

Otitis media

An infection of the middle ear

Night blindness

A condition that makes it difficult to see at night, the rod cells in the retina are affected in this condition

Organ of Corti

Hearing organ

Otosclerosis

Chronic, progressive ear disorder in which the bone in the region of the oval window first becomes spongy and then hardened.

Presbyopia

Farsightedness due to loss of elasticity in the lens of the eye

Posterior chamber

Chamber of the eye filled with vitreous humor

Presbycusis

A condition that causes deafness due to damage to the inner ear or auditory nerves

Pupil

Opening in the iris of the eye for passage of light

Oval window

The membrane that separates the middle ear from the inner ear

Retina

Innermost layer of the eye, contains the rods and cones

Rhinitis

Inflammation of the lining of the nose

Rods

Cells in the retina. They are sensitive to dim light

Sclera

Tough, white covering, part of the external coat of the eye

Stirrup (stapes)

A tiny, stirrup shaped bone in the middle ear

Strabismus (crossed eyes)

Condition in which the muscles of the eyeball do not coordinate their action

Sty (hordeolum)

Infection of the gland along the eyelid

Semicircular canals

Structures in the inner ear involved with equilibrium

Suspensory ligaments

The ligaments that hold the lens of the eye in place

Tinnitus

Ringing sensation in one or both ears

Umami

One of the five basic tastes, a savory taste

Vertigo

Sensation of dizziness

Tympanic membrane

Membrane that separates the external ear from the middle ear

Vitreous humor

Transparent, gelatin like substance filling the greater part of the eyeball