11. Teeth, Mouth, Eyes, And Ears

Question 1

Malady

Answer 1

Illness or disorder of the body

Question 2

3 parts of tooth:?

Answer 2

Crown, neck, root

Question 3

Crown

Answer 3

Top part of tooth that rises above gum; covered by enamel

Question 4

Enamel

Answer 4

Hardest substance in body

Question 5

Neck

Answer 5

Connect crown and root

Question 6

Root

Answer 6

Stabilizes tooth; covered by cementum

Question 7

Cementum

Answer 7

Bone-like substance

Question 8

___ hold onto cementum, fixing tooth firmly into jaw

Answer 8

Periodontal ligament

Question 9

Inside the other is a layer of?

Answer 9

Dentin

Question 10

Underneath dentin are blood vessels and nerves?

Answer 10

Pulp

Question 11

Blood vessels supply tooth with?

Answer 11

Nutrients

Question 12

Nerves

Answer 12

Help you sense activity on tooth surface; feel movement of tongue; helps you to talk

Question 13

Most obvious sign of poor oral hygiene?

Answer 13

Cavities

Question 14

Tooth decay

Answer 14

When plaque sits on surface of tooth

Question 15

Plaque

Answer 15

Film-like substance formed from acid resulting from combination of food sugars and bacteria

Question 16

Acid-like plaque eats away at surface of ____?

Answer 16

Crown; eventually reaching the pulp

Question 17

Cause of periodontal disease?

Answer 17

Plaque

Question 18

Periodontal disease destroys ___ that surrounds teeth and can cause?

Answer 18

Gums and ligaments; tooth loss

Question 19

First sign of periodontal disease?

Answer 19

Inflation of gums

Question 20

Halitosis

Answer 20

Medical term for bad breath

Question 21

Outer part of eye consists of:?

Answer 21

The sclera, the cornea, the iris, and the pupil

Question 22

Sclera

Answer 22

White outer part of eye

Question 23

Cornea

Answer 23

Clear outer layer that functions as a lens

Question 24

Iris

Answer 24

Colored part of eye

Question 25

Pupil

Answer 25

Opening in center of iris

Question 26

Pupil is controlled by ___ muscles of the ___ in its efforts to protect the eyes from ____

Answer 26

Involuntary; iris; light

Question 27

Inside the eyeball:?

Answer 27

Crystalline lens, collars body, and the retina

Question 28

Crystalline

Answer 28

Works with cornea to focus on an image

Question 29

Ciliary body

Answer 29

Collection of muscles that enables lens to focus

Question 30

Retina

Answer 30

Nerve tissue at back of eye; receives image that has been formed by cornea, pupil, and crystalline lens

Question 31

Retina

Answer 31

Converts image into electrochemical signals and transmits them to brain

Question 32

Eyeball rests in socket in?

Answer 32

Skull-orbit

Question 33

Orbit

Answer 33

Line with fat that cushions eyeball

Question 34

___ muscles control eye movement:?

Answer 34

6

Question 35

Conjunctiva

Answer 35

Inner lining of eyelids, which contains glands that secrete oils and tears

Question 36

Vitamin for eyes?

Answer 36

Vitamin A

Question 37

Sunglasses protect the ____ from damage, which could lead to partial blindness

Answer 37

Retina

Question 38

New and farsightedness is caused by?

Answer 38

Shape of eye; distance from cornea to retina

Question 39

Outer ear consist of:?

Answer 39

Pinna and ear canal

Question 40

Pinna

Answer 40

Made up skin and cartilage; receives sound waves

Question 41

Ear canal

Answer 41

Channels sound captured by pinna to eardrum; 1 inch long

Question 42

Ear canal is lined with tiny hairs that?

Answer 42

Protect middle ear and inner ear

Question 43

___ separates outer ear from middle ear

Answer 43

Eardrum

Question 44

Eardrum

Answer 44

Thin membrane that is sensitive to air pressure caused by sound

Question 45

When the eardrum vibrates, it moves a set of muscles called?

Answer 45

Ossicles

Question 46

Ossicles

Answer 46

Hammer, anvil, and stirrup; transmit sound waves from eardrum to inner ear

Question 47

Inner ear

Answer 47

Most complex structure of ear; consist of cochlea and semicircular canals

Question 48

Cochlea

Answer 48

Receives transfer of sound waves from ossicles and converts them into electrochemical impulses which are sent to brain

Question 49

The cochlea is shaped like ____ and is lined with?

Answer 49

Snail; hair cells

Question 50

Semicircle canals

Answer 50

Balance; contains fluid and hair cells that interpret changes in body's position