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  • Metabolic Muscular And Nervous Systems - 1,672 words
    ... ws the cross-bridge to detach and re-attach to another active site on an actin molecule. This contraction cycle is repeated as long as free calcium is available to bind the troponin and ATP is available to provide the energy. The signal to stop contraction is the absence of the nerve impulse at the neuromuscular junction. When this occurs, an energy requiring calcium pump located within the sarcoplasmic reticulum begins to move the calcium back into the sarcoplasmic reticulum. This removal of calcium from troponin causes tropomyosin to move back to cover the binding sites on the actin molecule and cross-bridge interaction ceases. It is possible for skeletal muscle to exert force without ...
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  • Caries - 2,340 words
    Caries have been a constant nuisance to humans, decaying teeth can become a major problem for those affected. It is certainly not the oldest pathology, nor the one of the greatest prevalence throughout humankind, but the information that can be extrapolate from such pathologies is great. The aim of this paper is to outline the pathology of caries and the influence that these have had on the human populations affected. Caries or caries dentium is the common name for tooth decay. It is a local disease, which is characterized by an irreversible and permanent destruction of the tooth hard tissue, enamel. Thus spreads the destruction to the rest of the tooth and, and possibly leading to tooth los ...
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  • Caries - 2,372 words
    ... d warming of climate where there is an increase in the growth of plant material and plant foods. This change would have promoted a growth in subsistence farming, at the very least. This would have increased the amount of plant carbohydrates and thus there was an increase in the occurrence in evidence of caries. Again in the Mesolithic there is further warming in the surrounding climate to the point where an even greater amount of plant food harvest is attainable for human consumption. Frayer found that for the Mesolithic, there was a negative correlation between rates of caries and latitude. This was the case where skeletal assemblages from northern sites continually show a decrease in c ...
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  • Cave Art - 408 words
    At the foot of a cliff in the Ardche Gorges, in south-eastern France, amateur speleologists discovered the world's oldest painted prehistoric cave. Discovered on December 18, 1994, this cave features art that dates back thirty-one thousand years. Jean-Marie Chauvet, Eliette Brunel-Deschamps and Christian Hillaire, were the amateurs who discovered the cave that has come to be known simply as the Chauvet cave. The explorers were in Vallon-Pont-d'Arc, France some thirty feet below ground. While exploring a cave, they were intrigued by a draft of air. They followed the draft to the source and discovered a cavity. This cavity then led to a vast network of galleries and rooms. The explorers were a ...
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  • Drug Laws - 5,063 words
    ... collection, the use of a non-Federal form is not a reason for the laboratory to reject the specimen for testing or for the MRO to cancel the test. (b) If the testing facility or the MRO discovers the use of the incorrect form, a signed statement must be obtained from the collector stating the reason why the Federal CCF was not used for the regulated collection. (a) A collection device is considered to be the following for each type of specimen collected: (1) For urine, it is the single-use plastic specimen container and/or bottle. (2) For hair, it is the foil and single-use plastic bag in which the hair sample is placed. (3) For oral fluid, it is the applicator, pad, or aspirator placed ...
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  • Facemasks In Hockey - 393 words
    I can see a little bit, but I dont see really. Its not a big help for me, I just have to wait until it comes back, said Mattias Ohlund defensemen for the Vancouver Canucks. Right now, Ohlund, has limited vision, it comes and goes. He held his hand six inches from his face and he couldnt see it. He was struck in the eye with a puck in a preseason game way back in September, he still is unable to see some things. The injury occurred when an opposing player shot it and it hit the stick of one of Ohlunds own players and ricocheted and hit Ohlund right in the eye. He was considered the best all-around defensemen for the Canucks. He was expected to only miss 10-14 days but ended up missing the who ...
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  • Auroras - 887 words
    In certain polar regions of the earth, a rare and fascinating phenomenon occurs in the dark season of winter. This phenomenon is called the Northern Lights, or auroras. In areas where auroras can be seen, the sun shines brightly for six months and then disappears for the next six. The sun follows a straight path across the sky, rising in the north and setting in the south. This is because of the latitude of these regions. Unlike other regions of earth, the polar regions either completely face the sun or don't face it at all. During the first six months of the long, endless nights of dark winter, auroras are frequently seen, almost every night, in fact. During the rest of the year, the summer ...
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  • Jack The Ripper - 1,636 words
    Jack the Ripper terrorized the East End of London with his haneous acts of senseless violence in the Nineteenth century. The perpetrator who committed these malicious murders in which the victims body was viciously mutilated is under speculation. By analyzing each murder, acknowledging the characteristics of the murderer, and providing a scenario which links Prince Eddy to the murders, it establishes that he is a likely suspect to be Jack the The first murder that is connected with Jack the Ripper occurred on Friday, the Thirty-First of August, 1888. Mary Ann Polly Nichols was found dead on Bucks Row with her clothes raised almost to her stomach. After a full post-mortem examination was perf ...
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  • Fuck Off - 875 words
    Dentist - Doctor of Dental medicine (DMD) or Doctor of Dental Surgery (DDS) av. Dental hygienist - associates or bachelors degree; above ave growth Dental laboratory Technician - 3-4 years on the job Dental Assistant and Certified Dental Assistant (CDA) Electrocardiograph Technician - ECG/EKG 1-12 months on the job training; below ave. growth 1-12 months on the job training, HOE Eletroenecphalogigraphic (EEG) technologist - fe have 1-2 year on the job trainingAbove ave. growth 1-2 years of on the job training Medical Technologist - (MT)-certified (c)- Bachelors or masters degree; licensure or registration required. Medical Laboratory Technician (MLT) Certified Laboratory Technican (CLT) aver ...
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  • None - 1,558 words
    TOXIC SHOCK SYNDROME (TSS) was discovered almost 20 years ago. At first no one knew what was causing it, although it was quickly linked with "superabsorbent" tampons (which are no longer on the market). Eventually researchers discovered that a poison produced by a type of bacteria known as Staphylococcus aureus is responsible for TSS. Some theorized that tampons may produce small ulcerations, which allow bacteria to enter the body. Another theory is that stagnating blood within or behind the tampon may permit the bacteria to grow. Most cases of toxic shock syndrome have been associated with tampon use. However, a few have been reported in women who use a diaphragm for birth control, or durin ...
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  • Dangers Of Smoking - 1,574 words
    When Christopher Columbus discovered the Americas, he found the natives using tobacco in much the same manner as it is used today. The American Indians believed it to possess 0medicinal properties, which was the main reason for its introduction into Europe. Tobacco was important in Indian ceremonies, such as the smoking of the pipe of peace. The detrimental effects of tobacco smoking have long been recognised. As early as the 19th century, isolated reports were circulated that cigar and pipe smoking caused cancer of the mouth. It was not until the 20th century (1950 in fact) that firm evidence was established that lung cancer was directly related to cigarette smoking. Lung cancer is now the ...
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  • Anatomy - 2,864 words
    Anatomy - is the study of the structure of the body parts & their Physiology - concerns with the function of the bodys structural Gross Anatomy - is the study of the large body structures visible to the naked eye. It can be approached in different ways. Regional Anatomy - is the study of all the structures in one particular Systematic Anatomy - is when anatomy is studied system by system. Surface Anatomy - is the study of the internal structures as they relate Microscopic Anatomy - is the study of structures too small to be seen They are usually divided into operations of specific organ systems. The Principle of Complementarity of structure & Function - Anatomy & Physiology are taught togeth ...
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  • Anatomy - 2,889 words
    ... ssue Connective tissues have three main elements: ground substance, fibers, & cells. Ground substances make up the extracellular matrix. (Note: that the term matrix indicates the ground substance.) Ground Substance - is an amorphous (unstructured) material that fills the space between the cells & contains the fibers. It is composed of instertitial fluid, cell adhesion proteins, & proteoglycans. Cell adhesion proteins, a group that includes fibronectin & lamina, sever mainly as a connective tissue glue that allows connective tissue cells to attach themselves to matrix elements. The proteoglycans consists of a protein core to which glycosaminoglycans (GAGs) are attracted. The strand-like G ...
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  • Sunset Limited - 1,036 words
    I read Sunset Limited, by James Lee Burke. This novel takes place in the 1990s in New Iberia, Louisiana. The theme of this novel is, With money comes the will to kill, but also the power to manipulate those around you and get away with murder. Dave Robicheaux and his partner Helen Soileau are homicide detectives under the New Iberia Parish in Louisiana when a Newsweek reporter, Megan Flyn, tips them about a small time criminal, Cool Breeze Broussard, complaining of abuse in lockdown in the local jail. As Dave investigates Cool Breeze, a mutual respect and trust develop between the two, and Cool Breeze tells him of a scam he was pulling on the Giancano family, an Italian mob selling VCRs and ...
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  • Machu Picchu - 1,813 words
    M A C H U P I C C H U E X A M I N E D High in the Peruvian Andes are ancient ruins located near the headwaters of the Amazon River. In recent years, these ruins have seen an increase in tourist visitations. So what has caused the increase of people to a remote area in the eastern Andes above the Rio Urubamba? It is Machu Picchu. Machu Picchu the city built by the Inca during the 1400s, was brought to the worlds attention by Hiram Bingham. This site contains numerous interesting objects the skillful Inca constructed from stone. After taking into account what is at Machu Picchu, one can see what lures hordes of individuals to this lost city in the mountains. Machu Picchu was built after Pachac ...
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  • Field Dressing - 447 words
    Dress your deer immediately. Field dressing takes effort, so your heavy hunting coat should be removed and your sleeves rolled up so they wont be soiled. Blood and digestive juices from organs possibly penetrated by the shot must be removed from the body cavity quickly, and the sooner the organs, which deteriorate rapidly, are removed, the faster the meat will cool. Field dressing also eliminates dragging unnecessary weight when moving the animal. Before starting the field-dressing process, keep in mind that it is important to keep dirt and foreign objects away from the exposed body cavity. Roll the carcass over on its back with the rump lower than the shoulders and spread the hind legs. Mak ...
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  • The Brain - 1,622 words
    Can you image a hunk of pinkish-gray tissue the size of your hand that is controlling your entire body? This organ in your body is called the brain. The brain is not the largest organ but is the most complex organ in your body. (Metos, 1990, p. 10 ) When you think of the brain do you think of the control center of movement, sleep, hunger, thirst, and virtually every other vital activity necessary to survive? Or do you think of the brain as the organ that controls emotions including, hate, love, fear, sadness, mourning, ect.? I really doubt you would think of that unless you were an anthropologist, a scientist who studies humans? ( Funk & Wagnalls Corporation, 1995, Encarta As a matter of fac ...
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  • Lasers And Their Applications - 1,995 words
    Laser is an acronym for light amplification by stimulated emission of radiation. In the last century many types of lasers have been used for many different applications from welding to surgery to military and even many uses in every day life by harnessing the principles of light and stimulated emission. To understand how lasers work we must first understand the physics behind light waves. Light is emitted from a source and travels in straight lines and when it strikes an object is either absorbed, reflected, or refracted. Light behaves primarily like a wave and its this wave nature of light that allows lasers to work. Constructive interference is what amplifies light. Since light is a wave i ...
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  • Dental Assisiting - 1,002 words
    I choose dental assisting because I have always wanted to work in a Health profession. I enjoy working with people and I like the team atmosphere approach of a dental office. Dental assisting is becoming an exciting career as dental laws are changing and the role of the assistant is increasing in regards to patient care. There are also many jobs available for dental assistants and also a wide variety of options. Dental assistants can choose to work in private practices, insurance companies, federal and state funded health programs, public health departments as well as teaching community colleges or universities. It is possible to become a dental assistant with no formal training. However mos ...
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  • The Victims Of Jack The Ripper - 1,562 words
    Jack the Ripper is remembered as one of historys most famous, daring, and heinous serial killers. His technique of getting his victims to lay down before he slashed their throats, then disemboweling them in a matter of a minute or two with as little blood flow as possible distinguishes him as one of the most methodical, ruthless killers to ever live. He even performed some of his gruesome murders right in the street and left his victims to be found minutes later by people or policemen passing by. This demonstrates what extremes he would actually go to to fulfill his desire for killing. Through my report I will attempt to create a brief profile of his victims as well as explore the methodical ...
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