Nicotine is defined by St. John Medical Center as an active and potentially poisonous ingredient in tobacco that directly stimulates the nervous system. According to the National Institute on Drug Abuse, nicotine is one of the most heavily used...
The principle function of your lungs is to transport oxygen into your bloodstream and rid your body of carbon dioxide. The process of gas exchange is carried out in tiny, thin-walled air sacs called alveoli. Although your lungs are extremely...
Back pain is a common complaint that most people will experience in their lives at one time or another. According to the National Institute of Neurological Disorders and Stroke, Americans will spend at least $50 billion each year to diagnose and...
According to The Society of Thoracic Surgeons, an aortic aneurysm is an abnormal weak bulge in the wall of a large blood vessel, or aorta. Dissecting an aortic aneurysm is the splitting or dissecting of an aortic wall by blood, causing the three...
