Sunday, May 30, 2010

A Step In The Right Direction




Our topic for unit 11 is to evaluate the importance of various technologies, including Canadian contributions, to our understanding of internal body systems. This is the first topic about humans doing something productive to our world. Doctor offices and hospitals are filled with various technologies that help them through their daily activities. Scientists keep inventing new technologies by the day, like the latest Visible Body in 3D. It is the most comprehensive human anatomy visualization tool. The Visible Body includes 3D models of over 1,700 anatomical structures, including all major organs and systems of the human body.

Its simple, we cant live without technology. Technology plays a big role in science, it was developed initially to allow us to live a more comfortable life. For example, it helped scientists to discover cures for the sickness. Technology helps maintain a healthy life style by recognizing early stages of health problems and has the advantage of improving our overall health. Also, technology helps us personally to learn more about our bodies and how everything works.






Some of the great inventions sciencetists discovered would be the ECR monitor (Electrocariography.) Willem Einthoven was a Dutch doctor and physiologist. He invented the first practical electrocardiogram (ECG or EKG) in 1903 and received the Nobel Prize in Medicine in 1924 for it. Before Einthoven's time, it said that the beating of the heart produced electrical currents but the equipments of that time could not perfectly measure this fact without placing electrodes directly on the heart. In 1901, Einthoven completed a series of prototypes of a string galvanometer. This device used a very thin filament of conductive wire passing between very strong electromagnets. When a current passed through the filament, the electromagnetic field would cause the string to move. A light shining on the string would cast a shadow on a moving roll of photographic paper, thus forming a continuous curve showing the movement of the string. The original machine required water cooling for the powerful electromagnets, required 5 people to operate it and weighed about 600 lb. This device increased the sensitivity of the standard galvanometer so that the electrical activity of the heart could be measured despite the insulation of flesh and bones.



Another great invention would be the Ultra sound. The Professor Ian Donald invented it. His war experience and his fascination with machines led to the development of ultrasound for medical scanning and for checking on the development of the foetus during pregnancy. Donald came into contact with Tom Brown and together they began to investigate the possibility that if sonar could be used to "see" submarines underwater, could it not also be used to see into the human body? Ian Donald was invited to experiment on human material using an industrial metal flaw detector. Professor Donald arrived with a selection of tumours, cysts and fibroids removed from patients while the company provided a lump of prime steak as a control. The machine was met with a patiet that was thought to be suffering from terminal stomach cancer, but underwent scanning and was found to have an ovarian cyst instead.

In conculsion, i would like to say that Canada has a big role in the Medical Field. Without a doubt, the most well-known Canadian medical discovery is the discovery of insulin in 1921-22 by Frederick Banting and Charles Best. It saved lives and remains the only effective treatment for diabetes. Also, other notable Canadian medical advances include Pablum and pediatric nutrition research from he Hospital fo Sick Children in Toronto; the world's first mobile blood transfusion unit put into practice by Canadian Norman Bethune in the battlefields of Spain and China; and neurosurgeon Wilder Penfield's "Montreal Procedure," a surgical treatment for epilepsy. These medical innovations, among others, altered the practice of medicine and offered improved treatment for the sick.
sources:




























Posted by at No comments:
Subscribe to: Posts (Atom)