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www.reference.com/article/type-digestive-system-fish-e7cb0264983460e6

Fish have a digestive system that begins at the mouth and ends at the anus. It is usually comprised of a mouth, esophagus, stomach, pancreas and intestine. Not all species of fish, however, have a stomach, such as Cyprinidonts and Cyprinids, and herbivorous fish have longer digestive tracts than car

www.reference.com/article/effects-exercise-digestive-system-4ce3483f16a24df

Exercise aids digestion and prevents constipation by stimulating the muscles of the bowel. It also improves symptoms of digestive diseases, such as irritable bowel syndrome, Crohn's disease, ulcerative colitis and celiac disease, according to Gastro Central. In fact, for digestive disease sufferers,

www.reference.com/science/liver-digestive-system-dbddd6a92a99435f

The liver is an essential part of the human digestive system. It is an accessory organ of the digestive system that assists with digestive processes without being directly involved with food digestion. The liver assists the digestive system by secreting bile and bile salts to help emulsify fats and

www.reference.com/science/function-stomach-digestive-system-e66bd5bffc0cab0d

The stomach is the primary organ that breaks down food as it enters the digestive system. This organ receives food from the esophagus and eventually directs the partially digested food into the small intestine. It also helps kill harmful bacteria.

www.reference.com/article/prevent-digestive-system-diseases-1054dc8b7b71ff57

To prevent digestive system diseases, individuals should make lifestyle and dietary changes such as refraining from smoking and alcohol use, minimizing intake of high-fat and acidic foods, eating more fiber, and increasing exercise and physical activity, Florida Hospital recommends. Individuals shou

www.reference.com/article/must-food-digested-875ddfae5c8a4f5a

Digestion is the process that breaks food down into the molecules that the body needs for all of its metabolic processes. Food is the body's fuel source and the source that the body's molecules and cells use to build and repair the body, but the body cannot use the food unless it has been digested.

www.reference.com/article/easy-digest-foods-f73b3d9e21baa6ad

Easy-to-digest foods include refined breads and pastas; well-cooked or canned vegetables without seeds; ripe bananas or canned fruits without seeds and skins; and animal products such as meat and eggs, states WebMD. Dairy is also easily digestible but can cause diarrhea and cramping in some people.

www.reference.com/science/food-travel-through-digestive-system-f44e11c8df0ec850

Food begins its journey through the digestive system in the mouth, before being pushed by a series of involuntary muscle contractions through the esophagus, then the stomach, and then the small and large intestines. The digestive system is essentially a series of long, hollow organs lined with muscl

www.reference.com/science/three-main-functions-digestive-system-672abb34a93da19f

The three main functions of the human digestive system are to break food down into chyme for the body's use, to secrete and absorb nutrients and bodily fluids into the gastrointestinal tract or the blood, and to store and eliminate waste. The digestive system has major parts and accessory parts.

www.reference.com/article/common-digestive-diseases-ce46e92bdbd46de3

Diseases that commonly attack the digestive system include irritable bowel syndrome, lactose intolerance, cancer, pancreatitis and gastroesophageal reflux disease, according to MedlinePlus. Liver disorders, including hepatitis B and C and liver failure; esophageal disorders, including achalasia and