skin. Skin cancer is categorized by skin cells and the skin layers. Melanoma is caused by a problem with melanocytes which are in charge of skin pigment. When the outer layer of skin is affected‚ it is called basal cell carcinoma. Squamous cell carcinoma is when the squamous cells that make up the surface of the skin are affected. When neuroendocrine cells which release hormones from the nervous system are affected‚ it is called neuroendocrine carcinoma (http://www.cancer.gov/cancertopics/types/skin)
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distant station on your radio‚ but too much in a microwave oven will cook you in seconds! A small amount of particle radiation in‚ say‚ the radium dial of a watch‚ is enough to make it glow in the dark harmlessly‚ but too much can destroy DNA in your cells and lead to mutations…even death! Neutron radiation is also encountered in nuclear power plants and high-altitude flight and emitted from some industrial
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freckle or mole Grow anywhere on the body Nodular melanoma: Grows quickly‚ in some cases can become life threatening in 6-8 weeks Usually appears as a new small lump on the skin‚ which may be black‚ brown‚ pink or red in colour. Squamous cell carcinoma (SCC): Account for about one-third of skin cancers Can grow quickly over several months Are usually scaly red areas that may bleed‚ ulcers or healing sores that may be painful (D) Investigate skin cancer and sun protection and identify:
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4- Black Hairy Tongue -Characterized by the elongation and hyperkeratosis of the filiform papillae‚ resulting in this hairlike appearance. The elongated papillae usually exhibit brown‚ yellow‚ or black pigmentation. Most patients are asymptomatic‚ but occasionally patients complain of irritation‚ gagging‚ or an altered taste. Patients are usually heavy smokers with poor oral hygiene and some have vitamin deficiencies‚ GI problems‚ or radiation therapy. Cures range from just brushing the
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of the skin. The epidermis is also composed of basal cells‚ which in turn divide to form squamous cells and melanocytes. Melanoma skin cancer develops from the melanocytes and non-melanomas skin cancer develops from the basal and squamous cells. There are 2 types of non-melanomas cancer that result from these cells. The first is basal cell carcinoma; basal cell carcinoma begins in the lowest layer of the epidermis‚ the basal cell layer. This type of skin cancer tends to be slow growing
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Integumentary System Laszlo Vass‚ Ed.D. Version 42-0280-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor
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higher level of sensitivity to the sun’s rays‚ which means the sun can more easily cause damage in the skin cells. Actinic Chelitis‚ also known as farmer’s lip‚ is another form of precancerous condition that usually appears on the lips. This condition is also characterized by scaly patches on the skin of the lips‚ if left untreated this condition may result in invasive squamous cell carcinoma. If clients are very frequently exposed to the sun with their entire bodies and their faces exposed it’s important
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of abnormal cells in the lung. The uncontrolled reproduction of cells results in the formation of tumors that can block or compress airways and displace or damage normal lung tissue. This can make the lung stop functioning as it should. Most lung cancers start in the lining of the bronchi‚ or in glands below the lining of the bronchi‚ frequently in the periphery of the lungs. When they are exposed to irritants or carcinogens‚ the epithelium continually replaces itself until the cells develop chromosomal
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can affect everyone around or using the gas. Radon is second leading cause of lung cancer‚ the primary adverse health effect associated with chronic exposure to radon is lung cancer typically bronchogenic‚ squamous cell carcinoma‚ small cell carcinoma‚ adenocarcinoma‚ large cell carcinoma. Radon also has the potential to generate genotoxic effects higher incidence of chromosomal aberrations. Radon has been linked with erotogenic effects. Radon and smoking displayed a synergistic effect. Increased
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produce fingerprints. Dermis ❛❛The epidermis is stratified squamous epithelium separated from the dermis by a❜❜ basement membrane. A. Epidermis Match these terms with the correct statement or definition: Callus Corn Keratin Keratinization Lipids Stratum basale Stratum corneum 1. The process that changes the shape and chemical composition of epidermal cells. 2. The strata of the epidermis that produces new cells by mitosis. 3. The strata of the epidermis that contains dead‚
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