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28 terms

chapter 7 Anatomy of the skin

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dermatology
the medical branch of science that deals with the study of skin its nature, structure, functions, diseases, and treatment.
dermatologist
is a physician engaged in the science of terating the skin, its structures, functions, and disease.
esthetician
is a specialist in the cleansing, preservation of health, and beautification of the skin and body.
epidermis
is the outermost layer of the skin.
basal cell layer
also referred to as the stratum germinativum the deepest layer of the epidermis.
melanocytes
melanin-forming cells.
stratum spinosum
spiny layer of the epidermis.
stratum granulosum
granular layer of the epidermis.
stratum lucidum
clear, transparent layr just under the skin surface.
stratum corneum
outer layer of the epidermis.
keratin
fiber protein that is the principal component of hair and nails.
dermis
underlying or inner layer of the skin; also called the derma, corium, cutis, or true skin.
papillary layer
outer layer of the dermis, directly beneath the epidermis.
tactile corpuscles
small epidermal structures with nerve endings that are sensituve to touch and pressure.
epidermal-dermal junction
the top of the papillary layer where it joins the epidermis.
subcutaneous tissue
fatty layer found below the dermis that gives smoothness and contour to the body, contains fat for use as energy, and also acts as a protective cushion fo the outer skin; also called adipose or subcutis tussue.
adipose
tissue that gives smoothness and contour to the body, contains fats for the use as energy, and also acts as a protective cushion for the outer skin.
blood
nutritive fluid circulatin thhrough the curculatory system to supply oxygen and nutrients to cells and tissues, and to remove carbon dioxide and waste from them.
motor nerve fibers
distributed to the arrector pili muscles attached to the hair follicles.
sensory nerve fibers
react to heat, cold, touch, pressure, and pain. these sensory receptors send messages to the brain.
secretory nerve fibers
distributed to the sweat and oil glands of the skin.
melanin
tiny grains of pigment deposited in the basal cell layer of the epidermis and papillary layers of the dermis.
collagen
fibrous protein that gives the skin form and strength.
elastin
protein base similar to collagen that forms elastic tissue.
sudoriferous glands
sweat glands of the skin.
sebaceous glands
oil glands of the skin connecte to hair follicles.
secretory coil
coiled base of sweat glands.
comedone
pore impaction that could lead to an acne papule or pustule.