Structural Biochemistry/Free energy - Standard Gibbs Free Energy of Formation. 1  When we have to consider the relationship between Gibbs free energy and the standard-state free energy of a reaction, we use this equation... 2  to calculate Gibbs free energy at that of time under a specific circumstances.
digestive system definition. The organs and glands in the body that are responsible for digestion. The digestive system begins with the mouth and extends through the esophagus, stomach, small intestine, and large intestine, ending with the rectum and anus. Other organs in this system include the liver, pancreas, gallbladder, and appendix.
In this article. Bleeding in the digestive tract is a symptom of a problem rather than a disease itself. It usually happens due to conditions that can be cured or controlled, such as hemorrhoids. The cause of the bleeding may not be serious, but it's important for your doctor to find the source of this symptom. The digestive or gastrointestinal (GI) tract includes the esophagus, stomach, small intestine, colon, rectum, and anus.