Week 3-Chapter 11 Flashcards
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
Anvil (incus)
Middle ear bone, or ossicle, in a chain of three ossicles of the middle ear
Astigmatism
Irregular curvature of cornea or lens
Aqueous humor
Watery fluid found in anterior chamber of the eye
Amblyopia
Dimness of vision
Anterior chamber
Space between cornea and iris
Auricle
(1) pinna, or ear flap, of external ear (2) atrium of the heart
Cataract
Condition in which the eye lens becomes opaque
Ciliary body
Ligaments that suspend the eye
Choroid coat
The middle layer of the eye
Cochlear duct
An endolymph-filled, triangular canal containing the spiral organ of Corti
Cerumen
A waxy or oily substance produced by ceruminous (sebaceous) glands in the lining of the outer ear. Also known as earwax
Cochlea
Spiral cavity of the internal ear containing the organ of Corti
Color blindness
Inability to distinguish colors
Conjunctivitis
An inflammation of the conjunctival membranes in the front of the eye
Deviated nasal septum
Condition in which there is a bend in the cartilage structure of the septum
Cones
Structures in the retina of the eye sensitive to bright light and responsible for color vision
Cornea
A clear, circular area in the very front of the sclerotic coat
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
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
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
Epistaxis
Bloody nose usually due to a rupture of the small vessels overlying the anterior portion of the nasal system
Diplopia
Double vision
Extrinsic muscles
Muscles responsible for moving the eye within the orbital socket
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
