Biology

The Human Digestive System What Is Digestion? The human personate obtains the repulse button and nutrients it unavoidably from fodder. However, our cells jackpot non absorb these nutritional benefits until the provender for thought has been digested - meaning, touch on and converted into a useable imprint. Thus digestion is the convoluted process of prisonbreak down food molecules into energy and opposite useful components, which can then be cloaked into the bloodstream and distributed throughout the body to importanttain good health. Food remnants which are not absorbed during the digestion process are expelled as waste in the wee-wee of feces. Where Do We Digest Our Food? The digestion of food in mankind takes place in the gastrointestinal tract - a serial of hollow organs (mouth, esophagus, and paunch, large and small intestines) machine-accessible to form a long tube of about 24 feet in length which extends from the mouth to the anus. It is also r eferred to as the GI Tract, the nourishing canal, the digestive tract, or the gut. Above the large intestine, the digestive constitution is sometimes called the upper gastrointestinal tract, while everything downstairs is the lour gastrointestinal tract. The tract has muscular walls that propel food along the tube (a process called peristalsis) breaking it down and meld it with digestive juices for optimum absorption.

The Functions Of The Digestive Tract The gastrointestinal tract has four main functions. It ingests the food we eat; it breaks it down into simpleton chemical components for energy and nutritio nal purposes; it extracts nutrients from it ! (eg. macronutrients such as carbs, fats, proteins; as well as micronutrients like vitamins and minerals); and finally it expels the remaining food waste. Figure 1. plot Of Digestive System  How Food Passes done The Digestive Tract During eating, food passes from the mouth into the esophagus, then into the stomach from where it enters the small intestine (comprising the duodenum, jejunum and ileum). to the highest degree if not all...If you want to wee-wee a full essay, gear up it on our website: BestEssayCheap.com

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