Chapter 13- Sensory Systems Flashcards
Orbit
Bony cavity of the skull that encases the eye
Conjunctiva
Mucous membrane that lines the eyelids and outer surface of the eyeball
Lacrimal glands
Glands that secrete tears
Lacrimal ducts
Channels that carry tears to the eye
Nasolacrimal ducts
Ducts that carry tears from the lacrimal glands to the noses
Tarsal glands, syn. meibomian glands
Oil glands along the edges of the eyelids that lubricate the eye
Sclera
Tough outer layer of the eye (the white of the eye) that extends from the cornea to the optic nerve
Cornea
Transparent outer covering of the anterior portion of the eye
Aqueous humor
Watery fluid that fills the anterior chamber of the eye
Iris
Colored muscular part of the eye located behind the cornea that allows light to pass through
Pupil
Opening in the middle of the iris through which light passes
Lens
Transparent structure behind the pupil that bends and focuses light rays
Choroid
Middle layer of the eye that contains blood vessels
Vitreous humor
Jellylike fluid that fills the posterior chamber of the eye
Retina
Innermost layer of the eye containing visual receptors
Optic nerve
Nerve that carries impulses from the retina to the brain to provide the sense of sight
Fundus
Posterior portion of the interior eyeball, visible through the opthalmoscope
Blephar/o
Eyelid
Conjunctiv/o
Conjunctiva
Corne/o
Cornea
Cry/o
Cold
Dacry/o, lacrim/o
Tears or tear ducts
Dipl/o
Double, 2
Ir/o, irid/o
Iris
Kerat/o
Cornea
Ocul/o, ophthalm/o
Eye
Otp/o
Vision, eye
Phot/o
Light
Presby/o
Related to aging
Pupill/o, cor/e, cor/o
Pupil
Retin/o
Retina
Scler/o
Sclera, hard
Ton/o
Tension, pressure
Bi-, bin-
2, 2x
-Ectasia, -ectasis
Dilation, stretching
-Lysis
Destruction, breakdown, separation
-Malacia
Softening
-Meter
Instrument for measuring
-Metry
Measurement of
-Opia, -opsia
Vision
-Pexy
Surgical fixation
-Phobia
Abnormal fear, aversion to, sensitivity to
-Plasty
Surgical reconstruction, repair
-Plegia
Paralysis
-Ptosis
Prolapse, drooping, sagging
-Rrhea
Flow, discharge
-Scopy
Process of examining, examination
-Spasm
Involuntary movement
-Trophia
To turn
Accommodation
Ability of the eye to adjust focus on near objects
Binocular
Pertaining to both eyes
Blepharal
Pertaining to the eyelid
Conjunctival
Pertaining to the conjunctiva
Corneal
Pertaining to the cornea
Intraocular
Within or inside the eye
Iridal, iridial
Pertaining to the iris
Lacrimal
Pertaining to tears
Ocular, syn. ophthalmic
Pertaining to the eye
Optic
Pertaining to vision
Pupillary
Pertaining to the pupil
Retinal
Pertaining to the retina
Scleral
Pertaining to the sclera
Amblyopia
Poor vision, usually in only 1 eye, caused by abnormal development of the visual areas; also known as “lazy eye”
Astigmatism
Distorted, blurry vision caused by abnormal curvature of the cornea or lens
Blepharitis
Inflammation of the eyelid
Blepharoptosis
Doping of the eyelids; also shortened to ptosis
Blepharospasm
Contractions of the muscles surrounding the eye, which causes poor vision
Cataract
Clouding of the lens of the eye, causing poor vision
Chalazion, syn. meibomian cyst
Obstruction of an oil gland in the eye
Color blindness
Deficiency in distinguishing some colors
Conjunctivitis
Highly contagious inflammation of the conjunctiva; commonly known as pinkeye
Dacryoadenitis
Inflammation of the lacrimal gland
Dacryocystitis
Inflammation of the lacrimal sac
Dacryolith
Stone in the lacrimal sac or ducts
Dacryorrhea
Excessive discharge of tears
Detached retina
Separation of the retina from the choroid in the back of the eye; can be caused by injury, tumor, or hemmorrhage
Optician
One who fills prescriptions for corrective lenses
Optometry
Medical specialty concerned w/ the measurement of vision and prescription of corrective treatment and lenses
Optometrist
One who practices optometry
Ophthalmology
Medical specialty concerned w/ the study of the eye, its diseases, + refractive errors
Ophthalmologist
One who specializes in ophthalmology
Auricle, syn. pinna
External portion of the ear
External auditory meatus, syn. external auditory canal
Canal extending from the auricle to the tympanic membrane
Cerumen
Waxy substance created by glands of the external auditory meatus; earwax
Tympanic membrane (TM)
Eardrum; a semitransparent membrane that vibrates to transmit sound waves to the ossicles; separates the external auditory meatus from the middle ear cavity
Mastoid bone and cells
Bone located behind ear filled w/ air cavities and encloses the middle ear
Pharyngotympanic tube, syn. eustachian tube, auditory tube
Tubular channel running from the middle ear cavity to the pharynx
Auditory ossicles
Middle ear bones contained in the tympanic cavity that transmit sound vibrations
Malleus
Auditory ossicle shaped like a hammer or club
Incus
Auditory ossicle shaped like an anvil
Stapes
Auditory ossicle shaped like a stirrup
Labyrinth
Inner ear, which is made up of a series of semicircular canals, the vestibule, + the cochlea
Cochlea
Snail-shaped organ containing the organ of hearing
Spiral organ, syn. organ of Corti
Receptor for hearing located within the cochlea; the organ of hearing
Vestibule
Anatomic chamber such as that found in the inner ear
Semicircular canals and ducts
Small tubes in the labyrinth that contain receptors that assist the body in maintaining balance
Labyrinth/o
Labyrinth, inner ear
Mastoid/o
Mastoid bone
Myring/o, tympan/o
Tympanic membrane, eardrum
Scler/o
Hard, sclera
Staped/o
Stapes