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Digestive System


Acid Reflux Acid reflux (also called gastroesophageal reflux disease, or GERD) is the abnormal backflow of stomach acid into the esophagus.

Anatomy Digestive System This module looks at the digestive tract as well as the three processes of the digestive system: digestion, absorption and elimination. Also, the module describes the different parts of the body used in the digestive process.

Anatomy and Illness Fundamentals, part 1, express A Guide for Grass Roots Audiences: This module describes the circulatory, musculoskeletal, digestive, urinary and respiratory systems. The two main topics are healthy body functioning and unhealthy body functioning.

Colorectal Cancer A Guide for General Audiences: This two-part module is specifically targeted to general audiences and describes diagnosis and staging.


Diarrhea Diarrhea is a common cause of death in developing countries and the second most common cause of infant deaths worldwide. It is usually a symptom of gastrointestinal infection, which can be caused by a variety of bacterial, viral and parasitic organisms.

Diarrhea in Adults This module describes the condition in adults, its causes, symptoms, complications, treatment and prevention.

Diarrhea in Children This module describes the condition in children, its causes, symptoms, complications, treatment and prevention; dangers and risks of dying; chronic diarrhea; and the importance of dietary therapy beginning with breastfeeding.


Dysentery This module describes the disease and its risk factors, causes, transmission, symptoms, diagnosis, complications and treatment, while continually emphasizing prevention.

Gastroenteritis Gastroenteritis (also known as gastric flu, although unrelated to influenza) is inflammation of the gastrointestinal tract, involving both the stomach and the small intestine and resulting in acute diarrhea.

Hepatitis The liver, the largest organ inside of your body, enables you to fight infection, removes chemicals or toxins from the system, digests food, and stores energy. Hepatitis is inflammation of the liver, which can be caused by viruses, medications or toxic agents.

Pancreatic Cancer A Guide for General Audiences: This module begins with an overview of the pancreas and cancer cells, while further explaining the risk factors, symptoms and diagnosis of the disease. The discussion includes staging and treatment, including follow-up care.

Stomach Ulcers In this module we discuss stomach ulcer—or peptic ulcer—which is an open sore. The word "peptic" means that the cause of the problem is due to acid.