Chapter 7- Skin Structure, Growth & Nutrition Flashcards
Medical branch of science that deals with the study of skin- it’s nature, structure, functions, diseases and treatment
Dermatology
dermatologist attend ____ years of college, _____ years of medical school and about ____ years of specialty training in dermatology
4
largest organ of the body
skin
if the skin of the average adult was stretched out, it would cover over _________ square inches and weight about ____ to _____ pounds
3,000
6-9
the surface of healthy skin is slightly ————
acidic
hair skin and nail’s pH
4.5-5.5
continued, repeated pressure on any part of the skin, especially the hands and feet, can cause it to thicken and develop into a
callus
the skin of the ______ is constructed similarly to the skin elsewhere on the human body, but the scalp has ________ and ________hair follicles to accommodate the longer hair of the head
scalp
larger
deeper
the outermost and thinnest layer of the skin.
epidermis
made up of 5 layers
epidermis
the layer we see when we look at the skin and it is the layer cared for by salon products and services
stratum corneum
a fibrous protein that is also the principal component of hair and nails
keratin
the spiny layer just about the stratum germinativum. the spiny layer where the process of skin cell shedding begins
stratum spinosum
more commonly known as the basal cell layer, is the deepest layer of the epidermis
stratum germinativum
the basal cell layer also contains special cells called ___________, which produces the dark skin pigment called melanin
melanocytes
also known as derma, corium, cutis or true skin, is the underlying or inner layer of the skin
dermis
the highly sensitive ______ layer of connective tissue is about 25 times thicker than the epidermis
dermis
are the small involuntary muscles in the base of the hair follicle that cause goose bumps and papillae
Arrector Pili muscles
the outer most layer of the dermis, directly beneath the epidermis.
papillary layer
small, cone shaped elevations at the base of the hair follicles
dermal papillae
where is the dermal papillae locates
within the papillary layer
top of the papillary layer where it joins the epidermis is called the
epidermal-dermal junction
the deeper layer of the dermis that supplies the skin with all of its oxygen and nutrients
reticular layer
also known as adipose tissue or subcutis tissue, is the fatty tissue found below the dermis
subcutaneous tissue
what carry impulses from the brain to the muscles
motor nerves
these sensory receptors send messages to the brain
sensory nerve fibers
the ________ layer of the dermis houses the nerve endings that provide the body with the sense of touch, pain, heat, cold. and pressure
papillary
tiny grains of pigment that are produced by melanocytes and then deposited into the basal layer of the epidermis and the papillary layers of the dermis
melanin
red to yellow in color
pheomelanin
dark brown to black in color
eumelanin
helps protect sensitive sells from the sun’s UV light
melanin
the skin gets its strength, form, and flexibility from two specific structures found within the dermis
collagen
elastin
gives the skin it’s flexibility and elasticity
elastin
also known as oil glands are connected to the hair follicles
sebaceous glands
when the sebum hardens and the duct becomes clogged a pore impaction called an _____________ also known as a black head, is formed
open comedo
a _______ also known as a _________ is a small elevation on the skin that contains no fluid but my develop pus.
papule
pimple
makes up to 50-70% of the body’s weight and it necessary for virtually every function of the cells and body
water
supports the overall health of the skin and aids in the health, function and repair of skin cells. It has been shown to improve the akin’s elasticity and thickness
Vitamin A
Vitamin ____ is virtually important in fighting the aging process and promotes the production of collagen in the skin’s dermal tissues, keeping the skin healthy & firm
C
enables the body to properly absorb and use calcium
Vitamin D
