Medicine is the branch of health science and the sector of public life concerned with maintaining or restoring humanhealth through the study, diagnosis and treatment of disease and injury. It is both an area of knowledge — a science of bodysystems, their diseases and treatment — and the applied practice — an art or craft — of that knowledge. However, medicine often refers more specifically to matters dealt with by physicians and surgeons.
The histories of both investigative and medical pathology can be traced to the earliest application of the scientific method to the field of medicine, a development which occurred in Western Europe during the ItalianRenaissance. Most early pathologists were also practicing physicians or surgeons. Like other medical fields, pathology has become more specialized with time, and most pathologists today do not practice in other areas of medicine. (More...)
Animation of a three-dimensional echocardiogram. The heart is viewed from the apex (tip), with the apical part of the ventricles removed. The mitral valve can clearly be seen to open and close. The leaflets of the tricuspid and aortic valve are not clearly visible, but the openings are. To the left are two standard two-dimensional views.