Ch 10 Physiology & Histology of Skin Flashcards
What are the basic material and building blocks for body tissue?
Proteins
What term refers to the study of the structure and composition of the skin tissue?
Skin histology
What is a characteristic of healthy skin?
Slightly acidic
What is not a method by which the body maintains thermoregulation?
Absorption
What is the bottom layer of the epidermis?
Stratum germinativum
Which layer of the epidermis is known as the grainy layer?
Stratum granulosum
What is the average adult skin cell turnover rate?
28 days
What stimulates melanin production
Exposure to sunlight
What color is eumelanin?
Dark brown to black
What percentage of hair is comprised of hard keratin?
90%
What type of glands secrete oil?
Sebaceous
What is not a function of lymph?
Supplying nutrients to the skin
What type of ultraviolet radiation is known as the burning rays?
UVB
What effect does nicotine have on the body?
Contraction of the blood vessels
What effect does nicotine have on the body?
Contraction of the blood vessels
Where do phytoestrogens come from?
Plants
This contracts when a person is cold, causing goose bumps
Arrector pili muscle
Opening for a sweat gland
Pore
Fluid found between epidermal cells
Intercellular matrix
Fiber protein that provides resiliency and protection to the skin
Keratin
Cell stimulator
Fibroblast
Protective barrier made up of sebum, lipids, sweat, water
Acid mantle
Oily substance that protects the surface of the skin and lubricates both skin and hair
Sebum
This stimulates skin cells to reproduce and heal
Epidermal growth factor (EGF)
Protects the body from infection by identifying foreign material (antigens)
Langerhans immune cell
Skins mechanism that protects us from irritation and intercellular transepidermal water loss (TEWL)
Barrier function
