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The majority of digestion and absorption occurs in the small intestine. This is a narrow tube measuring 20 feet long, divided into three parts including the duodenum, the jejunum and the ileum. Enzymes secreted in the small intestine break down the chyme from the stomac...


Heat absorption refers to the heat transfer that occurs between two bodies; it can occur through conduction, convection or radiation. Heat absorption also is an endothermic reaction. In an endothermic process, a cooler object absorbs the hotter object’s heat.


The human digestive system begins in the mouth and ends at the anus. Enzymes in saliva break food down into smaller particles in the mouth. Food is then swallowed and goes through the digestive tract before leaving the bottom through the rectum and anus.


A post-absorptive state is a metabolic period that occurs when the stomach and intestines are empty. During a post-absorptive state, the body's energy needs are fulfilled from energy previously stored in the body. This state is typically reached four or more hours after...


Food digestion and nutrient absorption take place primarily in the small intestine, according to eMedicineHealth. Nutrient absorption is facilitated by villi and microvilli, fingerlike projections from the intestinal wall that serve to increase the surface area of the i...


Absorption refrigerators use heat to drive the reaction that causes cooling. Recreational vehicle manufacturers often use these refrigerators in camping vehicles, in which propane fuels them. They provide cooling without using electricity.


Absorption mainly occurs in the small intestine, but a portion of it is also carried out in the stomach and the large intestine. Absorption can take place in two stages in the small intestine. These are called the luminal and membranous stages.