Aging of the human skin Enlarged version The formation of lines and wrinkles in light-exposed areas throughout the body‚ such as on the face‚ throat‚ décolleté and hands is a well-known sign of skin aging. Lines and wrinkles are influenced by both intrinsic and extrinsic factors. The numerous intrinsic factors are age‚ gender‚ genetic disposition and race. In exposed and unprotected zones of the body such as on the skin of the hands and the face‚ extrinsic factors such as UV light‚ weather
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NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE The Evolution of Human Skin Color by Annie Prud’homme-Généreux Life Sciences Quest University‚ Canada Part I Skin Cancer “Stop it!” called Tatiana‚ playfully. Her boyfriend‚ Zach‚ was inspecting her skin very carefully. “Look‚” he answered her‚ his voice taking on a more serious tone. “Today a woman walked into the clinic for her annual physical. Everything about her seemed ne. She leads a balanced lifestyle‚ she eats well‚ she exercises:
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The Nivea brand is one of the most recognised skin and beauty brands in the world. Nivea now extends to a wide range of products from facial wash‚ deodorant and shower products. In 1980‚ NIVEA FOR MEN was launched and it was a hit. In 1993‚ Nivea For Men developed a fuller range of male skin products. This changed the mind of men who doesn’t use these products. The company research proved that men mainly wanted products that will protect their skin after shaving. Beiersdorf (company that owns Nivea)
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Kayli Jade Gertsen Skin Evolution Essay Human skin pigmentation is the product of two clines produced by natural selection to adjust levels of constitutive pigmentation to levels of UV radiation (UVR). One cline was generated by high UVR near the equator and led to the evolution of dark‚ photo protective‚ melanin-rich pigmentation. The other was produced by the requirement for UVB photons to sustain cutaneous photosynthesis of vitamin D3 in low-UVB environments‚ and resulted in the evolution of
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According to The Encyclopedia of Skin and Skin Disorders‚ an insect bite is a puncture wound in the skin by any variety of insects. Some people have more reactions to bites or stings. Babies are usually more affected by bites and stings than adults. Severe allergic or toxic reactions are not common but can be life-threatening and require emergency care. Common stinging or biting insects that cause mild reactions are: mosquitoes‚ flies‚ fleas‚ bedbugs and kissing bugs‚ chiggers‚ nonpoisonous spiders
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| |INTEGUMENTARY SYSTEM - SKIN IS IN! | Integumentary? That’s a big word to describe something as simple as our skin. First‚ the skin is not all that simple. Second‚ integumentary systems are the parts in humans that include the basic types of skin‚ hair‚ fingernails‚ oil‚ and sweat glands. They are found in integument layers called the epidermis (top)‚ dermis
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caveman times. In the short story “Desiree’s Baby”‚ Kate Chopin shows how discrimination by skin color can affect people. Desiree was abandoned and raised by Madame Valmonde. Armand‚ the father of the baby‚ was a member of the most notable families in Louisiana. He falls in love with Desiree and marries her. After they have a baby‚ their relationship quickly corrodes. A few months later‚ Armand realizes the baby’s skin has a darker tint than usual. He accuses Desiree of being black. Armand tells Desiree
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SKIN • Largest and heaviest organ of the body; accounts for about 15% of the total body weight • Also called as cutaneous membrane • Skin contains two layers‚ the epidermis and the dermis. • The hypodermis is the layer underneath the skin. FUNCTIONS • Skin is a protective covering that prevents harmful substances from entering the body. • It helps regulate body temperature and water loss. • It houses sensory receptors and contains immune system cells. • It synthesizes chemicals and excretes
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SKIN I. INTRODUCTION Skin‚ outer body covering of an animal. The term skin is commonly used to describe the body covering of any animal but technically refers only to the body covering of vertebrates (animals that have a backbone). The skin has the same basic structure in all vertebrates‚ including fish‚ reptiles‚ birds‚ and humans and other mammals. This article focuses primarily on human skin. The skin is essential to a person’s survival. It forms a barrier that helps prevent harmful microorganisms
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Many may believe the skin is the most obsolete organ that humans have‚ but that is far from the truth. Scientists‚ just recently‚ have come to the conclusion that human skin is equipped with the strongest‚ most convoluted defense system that the body can produce. To the naked eye‚ the surface of the skin may seem like a calm‚ untouched wasteland scattered with grass-like follicles‚ but‚ magnified‚ it is a battle zone of the body’s defenses fending off unwanted‚ invading bacteria (Metaphor). With
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