deeper layers of skin from the sun’s damaging ultraviolet (UV) rays. These cells are called melanocytes. The melanocytes produce more melanin and cause the skin to tan when time is spent in the sunlight. The melanocytes may start to grow abnormally and can become cancerous if the skin obtains too much ultraviolet light. This condition is commonly known as skin cancer or melanoma. The same effect occurs when the skin is exposed to other forms of ultraviolet light such as a tanning bed. According to Diffey’s
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variety of sweat glands. However‚ MedlinePlus says that sunburned cells look much different than normal cells. Sun’s rays penetrate the outer skin‚ or the Epidermis‚ which destroys the Dermis‚ and results in the killing of skin cells. Also‚ the UV‚ UltraViolet‚ Rays from the sun are what cause the sunburns. Even when you are just tanning‚ the rays cause the melanin in your skin to become a darker color‚ while tanning‚ and sunburns‚ can reduce the melanin elastic‚ causing you to age prematurely. So as
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endings‚ enclosures and other details. Forensic scientists look for point-by-point comparisons in order to determine whether two fingerprints are the same. How are fingerprints discovered at crime scenes? Answer: A device called the Reflected Ultraviolet Imaging System (RUVIS) aims UV light at areas where fingerprints may be. Critical Thinking Of the three types of physical evidence discussed in this unit‚ which one do you think you would be most interested in working with in an investigation
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CULTURE What Makes Us Strangers When We Are Away from Home? Culture – is an abstract concept. You can’t touch it or see most of it‚ and much of it can’t be measured. But it has molded each of us into whom and what we are. The way we dress‚ what we eat for dinner and how we eat it‚ how we speak‚ what color we paint our houses‚ and what we think about these things. - is dynamic and adaptive. COMPONENTS of CULTURE 1. Cognitive Process Learning‚ knowledge and perceiving What people think‚ how
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Seeing the Invisible A Lesson Giving Students an Opportunity to Discover Ultraviolet and Infrared Radiation Coming from the Sun By: Sallie M. Smith Howard B. Owens Science Center for the ISTP Mission istp.gsfc.nasa.gov/istp/outreach/solar_observation.pdf istp.gsfc.nasa.gov/istp/outreach/student_booklet.pdf 1 Seeing the Invisible - Table of Contents - 5 E’s Lesson Plan ........................................................................................................... 3 Teacher
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You know the summer heat is getting severe in a country when a city decides to issue heat alerts. Ahmedabad in Gujarat last week became the first city in South Asia to develop a heat wave warning system in response to extreme temperatures. Here are five things you can do to beat‚ or at least cope with‚ the sweltering Indian heat: 1. Eat the right food. Sweating in extreme temperatures makes the body lose not just water‚ but also sugar‚ minerals and salts‚ especially sodium and potassium
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reducing your risk of certain cancers‚ quitting smoking will also reduce your risk of having a heart attack. Unprotected exposure to the sun’s ultraviolet rays has been shown to increase the risk for melanoma (skin cancer). The sun’s UV rays have also been shown to cause skin damage and premature aging. Health experts recommend avoiding exposure to the sun’s ultraviolet rays. It is recommended that when participating in outdoor activities individuals wear clothing (ideally long sleeve‚ long pants) with UV
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depression than those in sunnier environments. We should at least spend 20 minutes in the sun in the early morning‚ at least 3 times a day to absorb enough adequate necessary amount of ultraviolet rays producing vitamin D. Dr. Raymond Johnson of the Tulane School of Medicine exposed people to ultraviolet light. In 90 percent of the test subjects‚ their cardiac output increased an average of 39 percent. In other words‚ their hearts became stronger and pumped more
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Different skin tones in humans are associated with the sun’s UV radiation and geography. UV rays can be used by the human body as a source for Vitamin D‚ which helps make bones stronger by taking in the calcium necessary to create stronger bones. A ton of sun exposure that’s especially strong can be damaging to the human body‚ especially the skin. To solve this problem‚ evolution created a skin tone that was already dark in areas with strong sun exposure to protect the skin from the dangerous rays
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anatomy and physiology lab 1. What are some differences between Judy and Mariah that might make Judy more "at risk" for skin? cancer than Mariah?Judy had a pasty white skin. Therefore‚ her skin had less melanin than Mariah who had black hair and more melanin and are more protected against the uv rays of sun. 2. What observations did Judy make concerning her mole? Her mole changed shaped and turned bigger and its side were jagged. The middle was purplish-black and its edge were darker than
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