Chapter 14 Flashcards
Functions of the eye
The ocular system is responsible for vision
Combining form for eye or sight
opt/i, opt/o, optic/o, ocul/o, and
ophthalm/o
Orbit
Bony cavity of skull that contains the eyeball
Eyelids combining form
Also called Palpebrae
blephar/o
Conjunctiva is and combining form
membrane lining eyelids and covering the non-corneal parts of the eye
Conjunctiv/o is the combining form
Lacrimal apparatus is and combining form
structures that produce, store and remove tears
Lacrim/o and dacry/o are the combining forms
Structures of the eyeball
sclera = outer layer – white of the eye
Sclera combining form
scler/o
Cornea is and combining form
The transparent anterior portion is
called the cornea.
Combining forms for cornea are corne/o and kerat/o.
Chorioid of the eye
middle layer
Contains blood vessels
Combining form is choroid/o
Tapetum lucidum
iridescent reflective layer of choroid
Retina
inner layer
Nervous tissue layer that receives images
Combining form is retin/o.
Accommodation
Process of eye adjustments for seeing objects at various distances
Fluorescein dye stain
Test to detect corneal injury
Ophthalmoscopy
Procedure used to examine the interior eye structures
Tonometry
Procedure using an instrument to measure intraocular pressure indirectly
Aniscoria
Condition of unequal pupil size
Blepharospasm
Rapid involuntary contractions of the eyelid
Cataract
Cloudiness or opacity of the lens
Conjunctivitis
Inflammation of the conjunctiva
Keratoconjunctivitis
Inflammation of cornea and conjunctiva
Proptosis
displacement of the eye from the orbit
Keratocentisis
Puncture of the cornea to aspirate
aqueous humor
Combining form for ear
audit/o, aud/i, and ot/o
Functions of the ear
The ear is the sensory organ that enables hearing and helps to maintain balance
Combining form for sound/hearing
acoust/o and acous/o
Pinna
(auricle)
catches and then transmits sound waves
Pinn/i is the combining form.
Aur/i and aur/o also mean external ear
Outer ear structures
Pinna and externa auditory canal
External auditory canal
Tube that transmits sound from the pinna to the tympanic membrane
Glands secrete cerumen here
Middle ear structure
Tympanic membrane
Tympanic membrane
“eardrum”
Transmits sound waves to the ossicles (bones)
Tympan/o and myring/o mean
eardrum.
Inner ear structures
Chochlea
Cochlea
Organ of hearing
Cochle/o means snail or spiral
Otitis
Inflammation of the ear
Otitis interna
Inflammation of inner ear
Panotitis
Inflammation of all ear parts
Otopyorrhea
Pus discharge from the ear
Ablation
Removal of a part
Myringectomy
Surgical removal of all or part of the eardrum
Otoplasty
Surgical repair of the ear
AD
Right ear
AS
Left ear
AU
both ears
OD
Right eye
OS
Left eye
OU
Both eye
PLR
Pupillary light response
ERG
Electroretinogram
IOP
Intraocular pressure
KCS
Keratoconjuctivitis sicca