Terms
Definitions
Eye Parts
Ear Parts
Name
100

Nerves that branch off the spinal cord

Spinal nerves

100

Moisten the underside of your eyelids and keep the surface of the eyeball clean and moist; destroy bacteria and help prevent eye infections

Tears

100

A person specifically trained to examine eyes and to prescribe corrective lenses for defective vision

Optometrist

100

The special nerve of hearing that is first stimulated by vibrations of the liquid in the cochlea and then carries messages to the brain

Auditory nerve

100

The tiny middle-ear bone between the hammer and stirrup

Anvil

200

Screen out tiny bits of dust

Eyelashes

200

Sensory receptors on the surface of your tongue

Taste buds
200

The transparent covering of the iris and pupil through which light enters the eye

Cornea

200

Liquid-filled structures in the inner ear that help maintain balance in the body

Semicircular canals

200

The tiny middle-ear bone that touches the eardrum

Hammer

300

Help keep perspiration from running down into your eyes

Eyebrows

300

Close to shut out too great an amount of light; prevent objects from getting into your eyes

Eyelids

300

The tough, outer layer that covers all of the eyeball except the iris and the pupil

Sclera

300

The tiny middle-ear bone that strengthens vibrations from the anvil as it knocks on the oval window of the inner ear

Stirrup

300

The three parts of the middle ear

Hammer, anvil, and stirrup

400

Send messages from your nose to your brain; your brain identifies the odor

Olfactory receptors

400

Hollow spaces in the skull bones; protect the eyes

Eye sockets

400

A medical doctor who specializes in eye diseases

Opthalmologist

400

The part of the ear that is completely filled with liquid; converts vibrations to nerve impulses

Inner ear

400

How to protect your sense of hearing

Never clean your ears with anything sharp. Blow air gently out your nose when you swim underwater. Don't blow your nose too hard. Avoid continual loud noises. If you know you are going to experience a loud noise, open your mouth and cover your ears. See a doctor if you have an earache.

500

Light-sensitive cells that detect shape and movement in dim light; distinguish different shades of black, gray, and white

Rods

500

Light-sensitive cells that distinguish color and sharp details when there is sufficient light

Cones

500

A thin membrane that lines the eyelids and covers the front part of the eyeball

Conjunctiva

500

The fluid-filled part of the inner ear that is shaped like a snail shell; contains the auditory nerve endings

Cochlea

500

How to protect your sense of sight

Work in a well-lighted area. Have regular eye examinations. Carry sharp, pointed objects with their points down. Never rub your eyes.