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group of tissues that work together to perform closely related functions
organ system that includes har, skin, and nails and protects the body from pathogens and maintains homeostasis
outer layer of skin
the deep vascular inner layer of the skin
connective and adipose tissue layer just under the dermis
older cells harden in this process, process by which the cells of epidermis become filled with keratin and move to the surface, where they are sloughed off
a pigment that gives the skin its color
beneath the skin
inner layer of the skin
outer layer of the skin
tubelike depression in which a hair develops
protein produced as epidermal cells die and harden
dark pigment produced by certain cells
Gland that secretes an oily substance
a small tubular cavity containing the root of a hair
Melanin that give brown and black color to hair
melanin that provides natural hair colors from red and ginger to yellow/blond tones
secrete sebum (oil) into the hair follicles where the hair shafts pass through the dermis
glands of the skin that secrete small amounts of water to the skins surface
most abundent sweat glands, respond throught life to body temperature elevated by environmental heat or physical exercise.
sweat glands in the pubic and underarm areas that secrete thicker sweat, that produce odor when come in contact with bacteria on the skin