Health Vocab Chapter 18

Front 1

outermost layer of skin

Back 1

Epidermis

Front 2

helps determine the color of your skin, more melanin=darker skin

Back 2

Melanin

Front 3

tough and elastic layer of skin below the epidermis

Back 3

Dermis

Front 4

the opening of a narrow channel that leads to a gland

Back 4

Pore

Front 5

produces oil

Back 5

Sebaceous Gland

Front 6

condition in which the oil glands become blocked, infected, and swollen

Back 6

Acne

Front 7

a physician who deals with skin disorders

Back 7

Dermatologist

Front 8

a condition in which an area of skin becomes red, swollen, hot, and itchy

Back 8

Dermatitis

Front 9

a virus that causes clusters of watery blisters or cold sores

Back 9

Herpes Simplex I

Front 10

an area of uncontrolled cell growth that invades the surrounding tissue and destroys it

Back 10

Cancer

Front 11

the most serious form of skin cancer

Back 11

Melanoma

Front 12

white of the eye

Back 12

Sclera

Front 13

the nerve that transmits visual information to the brain

Back 13

Optic Nerve

Front 14

allows light to enter into the eyes

Back 14

Cornea

Front 15

thin, moist membrane that covers the front part of the sclera and the inside of the eyelid

Back 15

Conjunctiva

Front 16

dark colored membrane that makes up most o the middle layer of the eye

Back 16

Choroid

Front 17

gives the eye its color

Back 17

Iris

Front 18

opening in the iris that allows light to pass through the cornea into the interior of the eye

Back 18

Pupil

Front 19

lies behind the iris and is a transparent structure that focuses light on the inner, back side of the eye

Back 19

Lens

Front 20

the light-sensing part of the eye

Back 20

Retina

Front 21

respond to dim light and allow you to see black, white, and gray

Back 21

Rods

Front 22

stimulated by bright light and enable you to see color

Back 22

Cones

Front 23

process by which your eyes see and your brain interprets images

Back 23

Stereoscopic Vision

Front 24

the ability to see things to the side of the object you are looking at

Back 24

Peripheral Vision

Front 25

the ability to see nearby objects clearly but not far away objects

Back 25

Nearsightedness

Front 26

the ability to see far away objects clearly but not nearby objects

Back 26

Farsightedness

Front 27

distorted vision caused by irregular curvature of the cornea or lens

Back 27

Astigmatism

Front 28

inability to distinguish certain colors

Back 28

Color Blindness

Front 29

a condition caused by the pressure of fluid between the cornea and lens

Back 29

Glaucoma

Front 30

clouding of the eye’s lens

Back 30

Cataract

Front 31

a red, painful swelling at the base of an eyelash gland

Back 31

Sty

Front 32

an inflammation o the conjunctiva

Back 32

Conjunctivitis

Front 33

a narrow cavity that leads to the middle ear

Back 33

Ear Canal

Front 34

vibrates when sound waves strike it, at the end o the ear canal

Back 34

Eardrum

Front 35

connects the middle ear with the back of the throat

Back 35

Eustachian Tube

Front 36

separates the middle ear from the inner ear

Back 36

Oval Window

Front 37

a hollow, coiled tube that is filled with fluid

Back 37

Cochlea

Front 38

nerve through which impulses travel to the brain where they are interpreted as sound

Back 38

Auditory Nerve

Front 39

main inner-ear structures that help give you a sense of balance

Back 39

Semicircular Canals

Front 40

refers to a partial loss of hearing

Back 40

Hearing Impairment

Front 41

total inability to hear

Back 41

Deafness

Front 42

units of intensity or loudness of sound

Back 42

Decibels

Front 43

a specialized ear doctor

Back 43

Audiologist