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Chapter 7 Skin

TermDefinition
Dermatology The medical branch of science that deals with the study of the skin, its functions, and diseases.
Epidermis The outermost and thinnest layer of the skin.
Dermis The underlying and inner layer of the skin, also called the derma corium, cutis, or true skin.
The amount of years of post-high school education and training required to become a dermatologist. Twelve years
Skin The largest organ of the body.
The average adult skin weighs _______ pounds. 6-9 pounds
The surface of healthy skin is slightly_____. Acidic
The epidermis has _____ layers. 5
The highly sensitive dermis layer is about ____ times thicker that the epidermis. 25
Stratum corneum The layer of skin that is seen and treated by the cosmetologist.
Keratin Fibrous protein that is the principal component of hair and nails.
Stratum Spinosum The skin layer in which the shedding of skin cells first begins.
Stratum Germinativum The deepest layer of the epidermis, aka the basal cell layer, and it is composed of several layers with special cells that produce a dark skin pigment
Melanin The tiny grains of pigment deposited in cells that provide skin with its color and also helps protect sensitive cells from UV rays.
Melanocytes The name of the special cell in the stratum germinativum, responsible for producing dark skin pigment.
Arrector pili muscle The muscle that causes goose bumps when a person is frightened or cold.
Papillary Layer The outer most layer of the dermis and the layer that houses the nerve endings that provide the body with the sense of touch.
Dermal papillae Small, cone-shaped elevations at the bottom of hair follicles.
Epidermal-dermal junction The top of the papillary layer where it joins the epidermis.
Reticular layer The deeper layer of the dermis that supplies the skin with oxygen and nutrients.
Subcutaneous tissue Fatty tissue found below the dermis.
Motor Nerve Fibers Carry impulses from the brain to the muscles.
Sensory Nerve Fibers Sends messages to the brain.
Pheomelanin The melanin produced by the body that is red to yellow.
Collagen A fibrous protein that gives skin form and strength.
Elastin The fibrous protein that gives skin its flexibility and helps skin regain its shape after being expanded.
Sebaceous Glands Oil glands that are connected to the hair follicles.
Water The number 1 nutrient of the body and composes 50-70 percent of the body's weight.
Created by: mcorrea710
 

 



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