Skin Histology and Physiology Study Guide Flashcards
What rays cause sunburn and cancer?
UVB Rays
Healthy skin is slightly moist, soft, smooth and ______
somewhat acidic
What color is Eumelanin?
Dark brown to black
Estrogen from ______ are called phytoestrogens
plants
What is a part of the nail structure?
cuticle
Sebaceous glands are also know as ______
oil glands
What is a thin protective covering with many nerve endings?
Epidermis
What is the enzyme that stimulates melanocytes?
Tyrosinase
Barrier function prevents ________
skin irritation and intercellular transepidermal water loss (TEWL)
What is a protective cushion and energy storage for the body?
Subcutaneous layer (Hypodermis)
An esthetician that specialized in the beauty and health of the skin is ____
Histologist
How many cells shed a minute?
30,000
Damage to the barrier function of the skin causes what?
skin dehydration
Alpha Keratin is _____ and Beta Keratin _____
Soft/Hard
Another name for motor nerves
efferent
Ashley is hot and sweaty, what gland is causing this?
eccrine glands
Natural antioxidant in the skin helped to prevent damage from ______
free radicals
Does collagen and elastin production increase or decrease over time?
decrease
Apocrine glands
Coiled structures attached to hair follicles found in the underarm (axillary) and genital areas; secrete sweat.
Epidermal Growth Factors (EGF)
Stimulates cells to reproduce and heal
Hair papillae
Cone-shaped elevations at the base of the follicle that fit into the hair bulb; papillae are filled w/ tissue that contains the blood vessels and cells necessary for hair growth and follicle nourishment.
Telangiectasia
Capillaries that have been damaged and are now larger, or distended, blood vessels; commonly called couperose skin.
UVA
Aka aging rays; cause genetic damage and cell death
Melanocytes
Cells that produce skin pigment granules in the basal layer.
Onyx
technical term for the nail
Absorption
The routes of penetration are through the follicle walls, sebaceous glands, intercellular, or transcellular
