eye
what is astigmatism
a vision problem in which the cornea or the lens of the eye is curved unevenly causing blurred vision
how many decibels is a hairdryer
90
what is the crown
the visible part of the tooth
what is an optometrist
a health care professional who is trained and licensed to examine peoples eyes and prescribes eyeglasses or contact lenses
what is the dermis
the thick inner layer of skin
what happens when you have a scratched cornea
the eye becomes red, irritated, and sensitive to light
how many decibles is a rocket launch
180
what is fluoride
a mineral that helps prevent tooth decay it hardens to the enamel and makes it more resistant to acid
why should you never bite or pick your nails
biting and picking can cause bleeding, irritation, and infections
what is a dermatologist
a physician who screens for and treats skin disorders
what is nearsightedness
is a vision problem in which distant objects appear blurred while close objects are seen clearly
how should you care for your ears after swimming
rinse your ears and dry them carefully, a parent can apply a few drops of medicinal alcohol
what is dental plaque
a sticky substance containing bacteria that forms o teeth
what are lice
lice are small insects that can live in human scalps they lay eggs and spread quickly on items that touch hair
what gives the skin its color
melanin
what happens when you have conjunctivitis
the tissue around the eye and inside the eyelids swell
what does the outer ear do
collects sound waves and directs them into the ear
what holds the root of the tooth to the jawbone
cementum
is acne a skin disorder
yes
what do sweat glands in the skin produce
perspiration
what is another word for conjunctivitis
pink eye
what are the 13 parts of the ear
hammer, anvil, stirrup, inner ear, semicircular canals, auditory nerve, cochlea, eustachian tube, vestibule, middle ear, ear drum, ear canal, and outr ear
what is periodontal disease
a disease of the gums and other tissue that support the teeth
what is the epidermis
the thin outer layer of skin that provides a protective coating
does an optometrist care for your skin
no