Evolution of Skin Pigmentation due to UV Levels and Genes Introduction Identification of a person has long been related to the color of their skin‚ as skin color is the defining measure of races. There are multiple variations in skin color throughout the globe‚ with the differences in outward appearance ranging from dark to light. But what exactly has caused this to occur? What is the underlying event that has led to so much variation in the pigmentation of a person? What selection pressures
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Pineapple (Ananas comosus) Skin Extract as main Component in making a Moisturizing Soap An Investigatory Project Presented to: Sir. Joseph Valdez A Faculty of Science Department Statefields School Inc. In Partial Fulfillment of the Requirements for SCIENCE 7 by: Angela Grace Soriano Jose Renz BrionesKyla Alessandra De AsasMiguel M. Andas September‚ 2014 Chapter I: Introduction Background of the Study Nowadays‚ people have
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is a very serious type of skin cancer that can be caused by being exposed to ultraviolet rays. In most cases‚ these ultraviolet rays usually come from the sun‚ but they can also come from other artificial sources such as tanning booths (1). Exposure to ultraviolet rays damages your skin‚ but it usually takes several years before this damage leads to health problems such as melanoma (1). The skin is made up of three layers which are the epidermis‚ the outer layer of skin‚ the dermis‚ which is the
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SKIN AND THE INTEGUMENTARY SYSTEM CHAPTER 6 Your Name () OVERVIEW This chapter describes the skin and its appendages. It explains the structure and function of the layers of skin (dermis and epidermis) and the hair‚ nails‚ and sweat glands. This chapter also explains how the skin helps regulate body temperature and how it responds to environmental factors‚ such as sunlight and injury. Study of the integumentary system is essential to understanding how the body controls interaction between
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There are two types of skin: thick skin and thin skin. Thick skin is a type of skin that covers body parts prone to trauma and abrasions i.e. palms‚ fingers‚ sole. Thin skin‚ on the other hand‚ covers the rest of our body. The two types of skin share a lot of characteristics‚ but they also have differences which warrant a different classification. They are similar in that both are composed of 3 major layers: the epidermis‚ the dermis‚ and the hypodermis. The epidermis is where the epithelial cells
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Café au lait spots and hemangiomas would be seen in newborns. Precancerous keratotic lesion.A raised‚ rough plaque of red-tan pigmentation with a silver-white scale Lichenification is caused by prolonged intense scratching eventually thickening the skin and producing tightly packed sets of papules; this looks like surface of moss (or lichen). Keratoses .lesions that are raised‚ thickened areas of pigmentation that look crusted‚ scaly‚ and warty. seborrheic keratosis‚ looks dark‚ greasy‚ and “stuck
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amelanotic melanoma; Amelanotic melanoma is a form of skin cancer that lacks dark colors such as brown and black that are mostly seen in other forms of skin cancer. About 2.8 percent of melanomas are amelanotic‚ the risk of dying is higher since this form of skin cancer is hard to fight when found. This cancer is mostly found in advanced stages because it is so hard to detect from its looks as if it’s normal skin with a pinkish pigment to it. Skin cancer is mainly found in white patients and has pink
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everywhere. No perfections made in life‚ but yet some flaws can lead to bigger mistakes. Skin Stealer by Shel Silverstein and Ladies First by Shel Silverstein both show how a small mistake can lead to something bigger. Both texts are about how doom of one person can be caused by a small mistake that happened previously. In Skin Stealer it states‚ “ he’s the coo-coo who’s wearing my skin.” This shows that the character’s skin was stolen by a coo-coo. This is important because something must of happened to
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Professor Sims Sunday December 9‚ 2012 Melanoma Skin Cancer As early as the 1930’s‚ sun tanning was encouraged by medical professionals to promote skin health. Scientific research during the late 1890’s played a huge role in contributing to the skin diseases we now know to exist today. During the turn of the 19th century‚ there was a chronic and progressive disease known as Lupus Vulgaris. The disease left infected individuals with painful cutaneous skin sores. Lesions appeared on individuals around
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follicle 3.Two halves of a styles form a mirror image of one another Symmetical balance 4.Coarse‚ medium‚ or fine is classified as Hair texture 5.Hair and nails are an appendage of the skin and are part of what body system Integumenaty system 6.Round shaped pathogenic bacteria that appear singly Cocci 7.The skin that lies beneath the free edge of the nail plate Hyponychium 8.What is the study of small living things‚ microorganisms Microbiology 9.In basic massage‚ practitioner should avoid
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