MA 211 lesson 2 SB ch 8 orange

The retina has 7 million of these, which are activated by light and color and have precise visual acuity. These are called

cones

The retina has different _____ that respond to red, blue, and green light.

cones or receptor cells

Keratoconus means abnormal protrusion of the

cornea

kerat/o

cornea

Turning of the eye inward toward the nose is

esotropia

Turning of the eye inward toward the nose is _____.

esotropia

opt/o

eye

Groups of hair extending from the edge of the eyelid are called _____.

eyelashes

The thin fold of skin that covers and protects an eye is the _____.

eyelid

blepharitis

inflammation of the eyelid

mastoiditis

inflammation of the mastoid bone

retinitis

inflammation of the retina

uveitis

inflammation of the uvea

Pain receptors can detect _____.

injury to skin tissue

Glaucoma is an eye disease caused by abnormally high

intraocular pressure

irid/o

iris

Otologists

medical specialists in diseases of the ear

Otorhinolaryngologists

medical specialists in diseases of the ear, nose, and throat

nasosinusitis

nose and sinus inflammation

The sense of smell is activated by ___ receptors located at the top of the nasal cavity.

olfactory

The region of the retina where there are no rods or cones to receive images is called the _____ _____. It is the location where the optic nerve exits the eye

optic disk blind spot

An instrument used for determining eye refraction is called a(n)

optometer

The opening in the center of the eye that allows light to reach the lens is the

pupil

cor/o

pupil

lacrim/o

tears

is the fibrous white outer covering of the eyeball.

sclera

This is a frequent visual problem caused by the focusing of light rays at different points by a defective or uneven cornea.

Astigmatism

The accessory structures of the eye include which of the following?

Conjunctiva Lacrimal glands Eyelashes

What is the meaning of the combining form scot/o

Darkness

Audiologists

Evaluators of hearing function

What is the definition of vertigo?

Sensation of spinning or whirling

The act of adjusting something to make it fit the need is _____.

accommodation

The ciliary body contracts to change the shape of the lens in a process called

accommodation

An ___ is an instrument used to measure hearing.

audiometer

The combining forms for hearing are which of the following?

audit/o auricul/o audi/o

The shell-like structure of the external ear, which is also referred to as the pinna, is called the

auricle

The term pinna is synonymous with the word ______ when referring to the outer ear.

auricle

The combining form for the term eyelid is

blephar/o or blepharo

Drooping of the eyelid due to paralysis is called

blepharoptosis

A cloudiness of the lens of the eye is called a(n)

cataract

Ophthalmologists

A medical doctor who specializes in diseases of the eye

Optometrists

Are not medical doctors, but are skilled in the measurement of vision

Which of the following are included in the uvea?

Choroid Ciliary body Iris

Opticians

Licensed to make corrective lenses and adjust and repair glasses

A disorder of the inner ear with cluster of symptoms of acute attacks of tinnitus, vertigo, and hearing loss is known as ______ disease.

Ménière's disease

What test is used for acuity of distance vision?

Snellen letter chart

The method of relieving intraocular pressure in glaucoma is termed .

cyclodialysis

The intensity of sound levels is measured by (dB).

decibel

The intensity of sound levels is measured by

decibels or decibel

Gradual loss of central vision caused by degeneration of tissue in the macula is called macular

degeneration

The combining form for the term gray or silver is

glauc/o or glauco

Blepharitis is ____ of the eyelid.

inflammation

The inner ear is a system of two tubes called ___ , representing a complex, intricate system of passages.

labyrinth

Tears are produced by the _____ glands.

lacrimal

Phacoma is a tumor of the

lens

The colorless, flexible transparent body behind the iris is the _____.

lens

Loss of visual acuity due to degeneration of the central macula is

macular degeneration

Loss of visual acuity due to degeneration of the central macula is _____.

macular degeneration

The tympanic membrane is located in the _____ ear.

middle

The ciliary body is a ______ in the middle layer of the eyeball that changes the shape of the lens when it contracts.

muscle

The term given to someone who is able to see close objects but unable to see distant objects is

myopia, nearsightedness, or nearsighted

Sensorineural hearing loss is also known as ____ deafness.

nerve

Olfactory receptors are _____ covered with cilia that send small messages to the brain.

neurons

The middle ear bones are collectively called the auditory

ossicles

A painful fungal infection of the external ear canal is called

otitis externa

Another name for the auricle is the

pinna

The medical term for misalignment of the eyes is

strabismus

A constant ringing or buzzing in the ear is called

tinnitus

A persistent ringing, buzzing, whistling, or clicking noise in the ears is

tinnitus

Light touch is felt in the ___ layer of skin.

top, outer, or upper

The combining forms for the term eardrum or middle ear are which of the following?

tympan/o myring/o

The term ____ describes the sensation of spinning or whirling; dizziness.

vertigo

Structures within the ______ of the inner ear respond to movement and aid in maintaining balance.

vestibule

meaning of the combining form cerumin/o

wax