Sunday, March 22, 2020

Steroids Essays - Anabolic Steroids, Testosterone, Steroid Hormone

Steroids Drugs have been used in sports almost as long as sports themselves have been around. The ancient Incas discovered that the ashes from burned leaves of the Coca tree gave the people great stores of energy, and made sleep unnecessary for hours or even days, it was later discovered to be the stimulant cocaine. They would take it before long hunts, battles, and even found it useful in ancient sport competitions. It wasn't until 1886 that the first drug-related death in sports occurred. A bicyclist took a mixture of cocaine and heroine, called the "speedball," and died from it. Little were the doctors aware the epidemic that would follow in the next century. Anabolic steroids, developed in the 1930's in Europe, are drugs that help to build new body tissue quickly, but with drastic side effects. Anabolic means the ability to promote body growth and repair body tissue. It comes from the Greek word anabolikos meaning "constructive." Steroids are basically made up of hormones. One woman train ing to make the 1984 US women's basketball team used them, her muscles started to bulge, her voice grew deeper, and she even had the beginnings of a mustache. These are all the usual symptoms of anabolic steroids. Steroids were not always used for sports, they started out the same way most drugs did, medicinal purposes. Victims of starvation and severe injury profited from it's ability to build new tissue quickly. They also helped prevent muscle tissue from withering in patients who had just had surgery. Steroids are used to treat Addison's disease. Anabolic steroids are drugs that come from hormones or from combinations of chemicals that achieve the same result as hormones. Hormones may be given to an individual in their natural state, or in a synthetic one. The synthetic state is sometimes more potent than the natural one. Testosterone and progesterone are hormones used in steroids, another kind comes from the adrenal glands, which secrete various necessary bodily chemicals. The s teroids themselves can be taken orally, as tablets or powders, and can also be liquids that are injected into the muscles. The steroids taken by athletes contain testosterone or chemicals that act in similar way to testosterone. Testosterone is found in men and women, but in women it is present in much smaller amounts, mainly because it is produced in the testicles in men. More than one hundred and twenty steroids are based on the hormone testosterone. There are many brand names, such as Durabolin, Winstrol, Pregnyl, and Anavar. Basically anabolic steroids control the bodily functions that are normally under control of the bodies natural testosterone. As well as turning women into men and men into manly men it has a stimulate effect on skeletal muscle mass, some visceral organs, the hemoglobin concentration, and the red blood cell number and mass. Of course, most people take anabolic steroids illegally to stimulate growth in muscle cells. Once a person is born, he/she will not grow anymore muscle cells throughout their life. So when muscle mass increases it is the individual cells growing in girth to compensate for either an increase in work, or the release of androgen hormones(found in all anabolic steroids.) Exercise alone can stimulate the girth of muscle cells to increase by anywhere from thirty to sixty percent. The presence of androgen hormones allows for even greater growth. Anabolic steroids act like our natural androgen hormones in that they stimulate anabolic metabolism in the muscles. Anabolic metabolism involves the buildup of larger molecules from smaller ones and includes all the constructive processes used to manufacture the substances needed for cellular growth and repair. As a result of steroids stimulating anabolic metabolism, muscles increase in size to a substantially greater size than they would have been if the individual only exercised. Doctors take different views on prescribing steroids. Most dislike the use of them in sports, and some will not prescribe them at all for use in sports. They see them as dangerous for healthy individuals, and the taking of drugs to get a winning edge they see as cheating. Others don't like steroids, but will prescribe them, knowing their patient, if not given them by their doctor, will get them from somewhere

Thursday, March 5, 2020

Walter Cannon essays

Walter Cannon essays Born in Prairie du Chien, Wisconsin, on October 19, 1871, a child by the name of Walter Bradford Cannon would emerge into a world unlike the one he was to create. Caught up in the battle between traditionalists and Darwinists over the perceived conflict that was religion and science as a youngster, he would come to challenge the ideals of the Calvinist church. During his teen years, Cannon would break away from his family religion in search of his own answers within his independent judgment. Distinguishing himself academically within high school, Cannon was prepared to attend Harvard College in 1892. Four years after his initial enrollment to Harvard, he was accepted to Harvard Medical School by 1896. During his time in H.M.S., Cannon began his contributions to science as he investigated swallowing and stomach mobility with the use of x-rays. His research was published in the first American Journal of Physiology in 1898. By 1900 Walter had attained his medical degree. After graduation, Cannon joined the American Physiological Society and became the instructor in the Department of Physiology at Harvard Medical School. Soon after in 1902, he became an assistant professor of physiology and four years later would succeed Bowditch as the Professor of Physiology, becoming the chair of the department of which he would hold until 1942. In 1914, Cannon would serve as president of the American Physiological Society for two years and focused his studies on traumatic shock, writing Bodily Changes in Pain, Hunger, Fear, and Rage in 1915. Advancing to 1923, Cannon's Traumatic Shock postulated the causes of traumatic shock In the process of his research, he documented findings on the sympathetic nervous system as well as neurochemical transmission of nerve impulses. Cannon also discovered the adrenaline-like hormone sympathin and clarified the pathways of emotional responses which proved error to the James-Lange theory. ...