Human Cosmetic Surgery and Prosthetic Device Implants Essay

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Human Cosmetic Surgery and Prosthetic Device Implants

The human body is a collection of remarkable biological mechanisms that integrates features that can not be duplicated exactly. However, many modern prosthetic devices can add years to an individual's life, improve physical comfort and function, or in the case of aesthetic implants, improve emotional health. There are many types of implants that server a variety of functions that offer risks and benefits. Implants can server many purposes. Cosmetic surgery has variety prosthesis to select from, not only to change the appearance of a feature for aesthetic reasons, but also to correct disfiguring from trauma or disease. Numerous implants are available to enhance physical appearance
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These valves are designed to control the direction of blood flow through the heart. The opening and closing of these valves produce the heart beat sounds. When the heart beats, the valves close to keep the blood form flowing backwards. The heart beats more than one hundred thousand times per day. The valves must be able to flex, stretch and hold back pressure hundreds of million times in an average lifetime. The mitral and aortic valves are on the left side of the heart. These are most commonly affected by aging because the pressure is higher on this side. The right heart valves can be damaged by infection or lung disease. Regardless of the valve damage, as they harden or weaken they do not open properly and therefore blood flow may be blocked. Heart valve conditions may also be congenital. Diseases such as rheumatic fever or bacterial infections may also scar or destroy the valves. Heart valve diseases fall into two categories, stenosis and incompetence. The stenotic heart valve prevents full opening of the valve because of the stiffened valve tissue, therefore the heart works harder to push blood throughout the valve. The incompetent valve cause insufficient blood circulation by permitting backflow of blood on the heart. There are two main types of prosthetic valve designs: mechanical and bioprosthetic (tissue). Mechanical heart valves were first implanted in 1952. Since then, over 30 different mechanical designs have originated. The
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