Skin Structure, Growth and Nutrition Flashcards
Dermatologist
A physician who practices the treating of the skin , its structures, functions, and diseases
What is the largest organ in the body?
The skin
What is the thinnest skin of the body?
The skin under the eyes
Epidermis
The outermost and thinnest layer of the skin
Stratum Spinosum
The spiny layer just above the basal cell layer
What produces melanocytes
stratum germinativium with column shaped cells
what do melanocytes produce?
melanin
what does melanin help protect
protects the sensitive cells in the dermis from exposure to ultraviolet energy
Dermis
The underlying or inner layer of the skin
Papillary Layer
The outer layer of the dermis directly beneath the epidermis
Reticular Layer
The deeper layer of the dermis that supplies the skin with all of its oxygen and nutrients
Subcutaneous Tissue
A fatty layer found below the dermis
Adipose or (subcutis) varies in…
thickness according to the age, gender, weight, and general health of the individual
Lymph
The clear fluids of the body that resemble blood plasma
What does the lymph do
Bathes the skin cells removes toxins and other cellular waste,
What do Sensory Nerve Fibers react to?
heat, cold, touch, pressure, and pain. (sends messages to the brain
Melanin
The tiny grains of pigment deposited into cells in the basal cell layer of the epidermis and papillary layer
What are the two types of melanin the body produces
pheomelanin (red to yellow in color and eumelanin (which is dark brown to black
What does wearing sunscreen of 15 up to 50 do for the skin
protects it from burning and from receiving damage that can lead to skin cancer or premature aging
What does the skin get its strength, form, and flexibility from
Collagen and Elastin (found in the dermis)
Collagen
Fibrous protein that gives the skin form and strength
Elastin
A protein similar to collagen that forms elastic tissue