| A | B |
|---|
| a skin condition in which sebaceous glands become clogged | acne |
| a gland in the skin that supplies oil to the skin and hair | sebaceous gland |
| the oily secretion of the sebaceous glands | sebum |
| a mall, hard lump on the skin caused by a virus | wart |
| a spot or lump on the skin that is flesh-colored or darker | mole |
| the dark brown grains that help protect the skin | melanin |
| an abnormal sideways curve of the spine | scoliosis |
| tooth decay | dental caries |
| a thin, sticky film of bacteria that forms on teeth | plaque |
| a disease of the gums that can damage bones and teeth | periodontal disease |
| plaque that has hardened on the teeth | calculus |
| a condition in which the gums become red, swollen, and bleed | gingivitis |
| a condition in which the teeth are not in proper position | malocclusion |
| a vision disorder that results from irregularities in the shape or surface of the cornea or lens | astigmatism |
| a measure of the loudness of sound | decibel |
| a disease of the eye in which increasing internal pressure causes a gradual loss of sight | glaucoma |
| the colored part of the eye; it makes the pupil change size | iris |
| the part of the eye right behind the pupil; it finishes focusing the light | lens |
| light sensitive cells on the back of the eyeball; it changes light into nerve impulses | retina |
| the part of the eye that carries nerve impulses from the retina to the vision center in the brain | optic nerve |
| the black center of the eye; it allows light to enter the eye | pupil |
| the very outer layer of the eye; starts to focus the light | cornea |
| changes vibrations into nerve impulses | cochlea |
| the section of the ear that contains the chain of bones | middle ear |
| 3 Chain of Bones | hammer, anvil, and stirrup |
| carries impulses to the brain | auditory nerve |
| three fluid filled loops; gives a sense of balance | semicircular canals |
| runs for the ear to the throat; regulates pressure in the head | eustachian tube |
| 3 Parts of the Outer Ear | ear lobe, auditory canal, and eardrum |
