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Integumentary System

QuestionAnswer
What is the epidermis? the outermost layer of skin which sheds and contains dead cells.
What is an integument? a covering
What is the dermis? the second most layer of the skin which contains nerve cells, sebaceous glands, sweat glands, and blood vessels.
What is the subcutaneous tissue, or hypodermis? the third layer under the dermis, it is connective tissue made mostly of fat which keeps heat.
What is melanin? Absorbs ultraviolet radiation and protects the skin from the sun. Sun exposure increases production causing a tan, and is also made in the melanocytes.
What is Keratin? It is a protein which makes skin tough and waterproof.
what is sebum? sticky oil which lubricates skin and keeps the water equilibrium.
What are sebaceous glands? oil glands which produce sebum.
What is a hair follicle? Place in the epidermis which produces individual hairs which protect ad insulate the body. Shaft of hair grows from here to the surface.
What is a carcinoma? common type of cancer that is highly treatable and results from a genetic mutation caused by UV Rays.
What is the stratum corneum? a part of the epidermis which consists of 20-30 layers of dead flattened epithelial cells.
What is malignant melanoma? a rare skin cancer that affects people of all ages but often people younger than 35 years old, and can be deadly. It is formed in the melanocytes.
What is a basal cell? A stem cell in the epidermis which makes melanocytes and keratinocytes.
What is a squamous cell? A cell in the upper layer of the epidermis.
What is the SPF rating? A rating based on how many minutes person can wear sunscreen until getting a burn over how many minutes it takes to get a sunburn otherwise. It stands for sun protective factor and represents the radiation which is blocked.
What are ultraviolet A rays? rays emitted from the sun which penetrate deeply to the dermis to cause a tan as in tancer.
What are ultraviolet B rays? rays emitted from the sun which penetrate only the top layer to cause sun burns upsetting the basal cells. Causes cancer.
What is acne? a chronic inflammatory condition which involves the skin's oil-producing glands.
What is sebum? an oily secretion that lubricates the skin.
what is a synonym for ducts? Pores.
The outermost layer of the skin is constantly being what? replaced not repaired.
What is acne caused by? excessive secretion from sebaceous glands.
what does SPF mean? sun protective factor.
What is one risk factor of melanoma which cannot be controlled? genetic history of the condition in the family.
How can you prevent melanoma? not going out in the sun between ten and four, using 45 spf, and avoid burning.
What are the abcdefg's of cancer? asymmetry, meaning uneven halves, borders, jagged edges, color, changes color, diameter, width across is more than a pencil eraser, elevation, was flat and is now raised, firmness, hard instead of squishy. growth, grows or forms in two weeks.
What are the functions of this system? protection from injury, meaning it prevents illness with shedding. regulates the body temperature through fat insulation and blood vessel dilation and constrictions in the skin. Prevents the body from drying out. Makes vitamin d.
What does the hypodermis do? acts as a shock absorber, provides addition insulation to help conserve body hear, stores energy, and it anchors the skin to underlying organs.
What two types of cells are between the stratum corneum and the dermis? the melanocytes and the keratinocytes.
What happens to a basal cell when a person gets a sunburn? it becomes burned, irritated, and it swells.
What is the uv index? the amount of uv radiation reaching the ground.
What do sand, snow, and water have on uv rays? reflect 80 percent of uv rays and increase exposure.
Why do scientists think melanoma cases are increasing? the thinning of the ozone layer, and increased exposure to sun when a child.
Created by: alyssablake
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