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Review Senses Chapter 11 Unit 3 Review • For additional protection, the outside of the eye is covered with tough, white fibrous tissue. It maintains the shape of the eyeball, and have six muscles attached and are anchored in the skull, this permits the eye to roll up and down, in and out, and in combinations of these directions • Sclera Review • This is the colored part of the eye: brown, green, blue, etc. It is a ring of muscle fibers located behind the cornea and in front of the lens. It contracts and expands, opening and closing the pupil, in response to the brightness of surrounding light? • Iris Review • A mucous membrane that lines the inner surfaces of the eyelids and covers the anterior sclera surface of the eye? • Conjunctiva • This is a clear, dome-shaped surface that covers the front of the eye. It is the first and most powerful lens in the eye's optical system? • Cornea Review • Further protection for the eye which secrete tears to moisten and cleanse the surface of the membrane(when we cry we get a runny nose) • Lacrimal glands • This is the film of the eye. It converts light rays into electrical signals and sends them to the brain through the optic nerve and is composed of nerve tissue, is where most the problems leading to vision loss occur? • Retina Review • This is a gradual cloudiness of the lens; the condition causes a painless, gradual blurring and loss of visual acuity(usually over 70 year of age)? • Cataract • This condition alters the light-sensing retina in the back of the eye • Age related macular degeneration • This condition is caused by inflammation of the conjunctiva • Conjunctivitis(pink eye) • This condition is also known as nearsightedness , when the eyeball is too long? • Mypopia Review • • • • • • • • • OD stands for oculus dexter and indicates Right eye OS stands for oculus sinister and indicates Left eye OU stands for oculus Uterque and indicates Both eyes A normal recording for a patients visual acuity on a snellen chart? 20/20 What is an abnormal reading on the snellen chart and considered legally blind • 20/200 Review • • • • • The three major areas of the ear? The outer ear The middle ear The inner ear What are the other two parts of the outer ear? • auditory canal • tympanic membrane(eardrum) Review • These three small bones are called the middle ear • Malleus, incus, and staples • The inner ear contains? • Cochlea and three semicircular canals • Semicircular canals are responsible for? • Maintaining equilibrium(balance) • This is the outer part of the ear that picks up the first vibrations? • Pinna(auricle) Review • The number cause of an auditory canal obstruction? • Cerumen(earwax) • This is a condition of reduced ability to perceive sound at normal levels, this can be gradual or sudden and occurs in the middle ear? • Hearing loss • Hearing loss occurs in which lobe of the brain? • Temporal • This is a disorder of the inner ear, usually affecting one ear, characterized by severe vertigo(dizziness) and tinnitus(ringing in the ears)? • Meniere’s disease Review • A condition that occurs when involving movement(planes, boats, cars), this is characterized by loss of equilibrium, perspiration, headache, nausea, and vomiting? • Motion Sickness • Is an infection of the external auditory canal, causes pain and hearing loss(also called swimmer’s ear)? • Otitis externa • Is an infection of the middle ear? • Otitis Media • This is a condition of ringing or buzzing sound(s) in the ears? • Tinnitus • Medical term for dizziness with some loss of balance? • Vertigo Review • These usually benign growths, most often multiple, and in both sides of the nose, may occur in large enough numbers and size to obstruct the airway, associated with allergies and chronic sinusitis? • Nasal polyps • This is a medical term for presence of blood originating from the nose? • Epistaxis • This is a medical term for a reaction to airborne allergens? • Rhinitis Review • This disease is a fungal infection of the mucous membranes of the mouth and throat? • Candidiasis