unit 3 health
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.