The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...

IN spite of its comparative youth, the strides made by radiology since the discovery of X-rays and the demonstration of their properties by Röntgen in 1895, have been most spectacular. As a ...

A continuation of the basic knowledge of human structure and function. The topics treated are cardiovascular system, lymphatic system, respiratory system, endocrine system, digestive system, ...

Teeth are made of enamel, calcium, and other substances. This article defines key terms to help you understand how teeth fit ...