unit 3 health

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medulla

A strand of hair is composed of a bulb, a cortex, a and a cuticle.

crown, enamel

The ______________ is the top part of the tooth that is covered by _______________.

root, cementum

The _________________ stabilizes the tooth and is covered by the ________________ .

iris

The colored part of the eye

keratin

a protein substance necessary for healthy skin, hair, and nails

ear drops

a safe treatment for wax build-up

eardrim

a thin membrane, dividing the outer ear from the middle ear, which moves the ossicles

ear plugs

appropriate protection from loud noises

earache

caused by sinus infection or another illness affecting the nose or mouth

ear canal

channels sound to the eardrum

conjunctiva

consists of the inner lining of the eyelids, which contain many glands that secrete oil and tears, enabling the eye to move freely and easily.

cochlea

converts sound waves into electrochemical impulses, which are transmitted to the brain

Healthy hair and eyes are dependent upon

diet rich in protein and vitamin A

Periodontal

disease destroys the gums and ligaments that surround the teeth.

epidermis

outer layer of skin that is responsible for the production of melanin and keratin

cuticle

protective and waxy or hard layer covering the epidermis of a plant, invertebrate, or shell.

wax

protects the eardrum from dirt

ossicles

small bones in the middle ear that transfer sound waves to the inner ear

washing

the best means of prevention for body odor and acne

dermis

the inner layer of skin that contains hair follicles, blood vessels, and sebaceous glands

retna

the nerve tissue at the back of the eye, which receives the image that has been formed by the cornea, the pupil, and the crystalline lens.

acne

the result of sebum being trapped in a follicle with a piece of dirt or bacteria

body odor

the results of sweat being allowed to sit on bacteria-crowded areas of the skin

nail matrix

the root of the nail from which the keratinized cells grow.


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