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Transcript of The Skin
The skin is part of the integumentary system. It is the largest organ of the body.(20 square feet) It is composed of complex system of cells, nerves and glands. The skin performs functions that help you live a normal life.
The skin forms a barrier that keeps harmful substances outside the body, while it keeps the important fluids inside the body. Melanin found in skin protects the body from extra ultraviolet rays.
Protects Our Body From:
Damaging Sun (ultraviolet radiation)
When temperatures lower, blood vessels contract or tighten and limit the hot blood that can reach the skin, preventing heat loss. Pores also become smaller, in order to conserve heat
When temperatures rise, blood vessels widen, which allows more blood to flow through and heat to escape the environment. In addition, when sweat glands activate and evaporate, skin is cooled.
Protecting the Body
Personal Body Thermostat
Functions of the Skin
Waste Products in Your Skin
Perspiration has dissolved waste materials from the breakdown of chemical processes, such as the excretion of water, urea, ammonia, and uric acid.
When you sweat or perspire, waste products are released from the surface of the skin.
Your skin provides information such as pressure/touch, temperature, and pain.
Nerves in your skin gather information from the environment and then provide the information that can warn or tell you about the environment.
Producing Vitamin D
What is Vitamin D?
Vitamin D is a vitamin that is important for healthy bones because it helps your body absorbs the calcium in your food.
When in the presence of sunlight, the skin cells produce vitamin D. The skin needs sunlight each day to produce enough vitamin D.
specializes in skin, hair, mucous membranes and nails
diagnoses acne to psoriasis to dangerous cancers
diagnose and treat more than 3000 different diseases
can improve appearances of patients' skin, hair and nails
10 years in schooling and training after high school.
College, earning a bachelor's degree.
Medical school, becoming a medical doctor (MD) or doctor of osteopathic medicine (DO).
Internship, 1 year.
Dermatology residency program, at least 3 years.
Cool Facts about the Skin
Skin sheds its dead skin cells on a daily basis, creating a new layer of skin every 28 days.
Dust is partly made up of dead skin cells.
The skin's surface is home to diverse bacterias, collectively known as the skin microbiota. They live off of the skin and can help immune cells fight disease-causing microbes.
Changes in the skin can reveal a lot about your health.