Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream. Digestion is a form of … See more Digestive systems take many forms. There is a fundamental distinction between internal and external digestion. External digestion developed earlier in evolutionary history, and most fungi still rely on it. In this process, See more The human gastrointestinal tract is around 9 metres (30 feet) long. Food digestion physiology varies between individuals and upon other factors … See more Some nutrients are complex molecules (for example vitamin B12) which would be destroyed if they were broken down into their functional groups. To digest vitamin B12 non-destructively, See more Digestion is a complex process controlled by several factors. pH plays a crucial role in a normally functioning digestive tract. In the mouth, pharynx and esophagus, pH is typically about 6.8, very weakly acidic. Saliva controls pH in this region of the digestive tract. See more In most vertebrates, digestion is a multistage process in the digestive system, starting from ingestion of raw materials, most often other organisms. Ingestion usually involves some type of mechanical and chemical processing. Digestion is … See more Protein digestion Protein digestion occurs in the stomach and duodenum in which 3 main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down food proteins into polypeptides that … See more There are at least five hormones that aid and regulate the digestive system in mammals. There are variations across the vertebrates, as for instance in birds. Arrangements are complex and additional details are regularly discovered. For instance, more … See more WebThe breaking down of food by physical means, such as chewing. Absorption. The process by which nutrients pass through the walls of the digestive system into the blood. …

Digestion: Anatomy, physiology, and chemistry - Medical News …

Webdigestion: [noun] the action, process, or power of digesting: such as. the process of making food absorbable by mechanically and enzymatically breaking it down into simpler … Webdigestion [dĭ-jes´chun] 1. the subjection of a substance to prolonged heat and moisture, so as to soften and disintegrate it. 2. the act or process of converting food into chemical … patricia leon md

Digestion - definition of digestion by The Free Dictionary

Webdigestive system: [ dĭ-jes´tiv ] pertaining to digestion. digestive system the organs that have as their particular function the ingestion, digestion, and absorption of food or nutritive … WebDIGESTION means pursuant to PRC 40116.1 the controlled biological decomposition, of organic solid waste that are separated from the municipal waste stream or which are separated at a centralized facility, and that proceeds through one or more of the stages of hydrolysis, acidogenesis, acetogenesis, methanogenesis, and glycolysis. Webdigestion, sequence by which food is broken down and chemically converted so that it can be absorbed by the cells of an organism and used to maintain vital bodily functions. This … patricia leone