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Topic: Digestion

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In the News (Sat 20 Apr 19)

  Food and Nutrient Digestion - Overview
Digested molecules of food, water and minerals from the diet, are absorbed from the cavity of the upper small intestine.
The digestible carbohydrates are broken into simpler molecules by enzymes in the saliva, in juice produced by the pancreas, and in the lining of the small intestine.
Digestion is the process by which food and drink are broken down into their smallest parts so that the body can use them to build and nourish cells and to provide energy.
www.nutristrategy.com /digestion.htm   (2000 words)

 Anaerobic Digestion in Rural China
The digesters produce biogas that is used as an energy source by the households, and produce fertilizer that is used in agricultural production.
When the digesters were initially promoted, one of the main waste materials processed in the digesters was rice stalks.
In addition to reducing the efficiency of the digester, the crust needed to be removed in an annual clean-out.
www.cityfarmer.org /biogasPaul.html   (2422 words)

 Zoology: Digestion
Both extracellular and intracellular digestion must be compartmentalized so that enzymes involved in macromolecular degradation can be sequestered to prevent them from degrading the rest of the cell or body.
Rabbits use it to allow bacterial digestion of cellulose, but this is too late for absorption, so the rabbits eat feces for more nutrients.) The chyme is now composed of mostly undigestable material such as fiber from the beans and some waste products, and a lot of liquid.
Bacteria in the large intestine act upon some of the materials the body couldn’t digest, like the fiber, breaking it down for their own use, and the large intestine can absorb some nutrients, but not a lot.
www.rhodes.edu /biology/glindquester/zoology/11n12digestion.html   (1503 words)

Digestion in humans, as in other animals, is the process by which food containing nutrients such as proteins, fats, and carbohydrates is eaten and broken down to its components.
Digestion of both types of starch--amylose and amylopectin--is initiated by salivary amylase during chewing and is stopped by gastric acid in the stomach.
Starch is further digested in the duodenum by pancreatic amylase to maltose and isomaltose.
www.mmeade.com /cheat/digestion.html   (1758 words)

  Your Digestive System and How It Works   (Site not responding. Last check: 2007-10-07)
Digestion is the process by which food and drink are broken down into their smallest parts so that the body can use them to build and nourish cells and to provide energy.
Digestion involves the mixing of food, its movement through the digestive tract, and the chemical breakdown of the large molecules of food into smaller molecules.
Digested molecules of food, as well as water and minerals from the diet, are absorbed from the cavity of the upper small intestine.
digestive.niddk.nih.gov /ddiseases/pubs/yrdd   (2084 words)

  Digestion - Wikipedia, the free encyclopedia
Digestion occurs at the multicellular, cellular, and sub-cellular levels, usually in animals.
Cholecystokinin (CCK) - is in the duodenum and stimulates the release of digestive enzymes in the pancreas and stimulates the emptying of bile in the gall bladder.
The oligosaccharidases responsible for the further digestion of the starch derivatives are located in the outer portion of the brush border, the membrane of the microvilli of the small intestine.
en.wikipedia.org /wiki/Digestion   (1549 words)

 The Digestive System
Digestion is the process by which food and drink are broken down into smaller parts so that the body can use them to build and nourish cells, and to provide energy.
Digestion begins in the mouth, where food and drink is taken in, and is completed in the small intestine.
The food is digested in the small intestine and dissolved by the juices from the pancreas, liver, and intestine, and the contents of the intestine are mixed and pushed forward to allow further digestion.
www.umm.edu /digest/howworks.htm   (522 words)

 WHFoods: How Does Digestion Work and How Can I Improve Mine? (Animated graphics)
Digestion occurs in the gastrointestinal tract-the 20 to 30 foot long tube extending from your mouth to your anus.
Digestion uses both mechanical processes, such as chewing and grinding, which help separate the different types of molecules, as well as chemical processes, in the form of enzymes that can cut the bonds within the molecules, to release small nutrients into your system.
Digestion would be the process of untwisting and separating the chains, usually requiring cutting them in a couple of places, and then pulling them apart and further cutting each of them into many smaller pieces, so they can become building blocks for other necklace chains.
www.whfoods.com /genpage.php?tname=faq&dbid=16   (7341 words)

 digestion - Search Results - MSN Encarta
Digestive System, series of connected organs whose purpose is to break down, or digest, the food we eat.
Intestine, also bowels, in higher animals, the portion of the digestive tract between the stomach and anus.
Digestive System, small intestine, where the most extensive part of digestion occurs, animal digestive systems, bacteria, digestion and metabolism,...
encarta.msn.com /encnet/refpages/search.aspx?q=digestion   (155 words)

 digestion - Hutchinson encyclopedia article about digestion
In digestion large molecules of food are broken into smaller, soluble molecules, which are absorbed through the wall of the gut into the bloodstream and carried to individual cells.
Protein is partly digested in the stomach, where the enzyme pepsin breaks large protein molecules into smaller ones.
In some single-celled organisms, such as an amoeba, a food particle is engulfed by the cell and digested in a vacuole within the cell.
encyclopedia.farlex.com /digestion   (652 words)

Incomplete digestion of foods which then pass through a leaky gut into the bloodstream is a major contributing factor to the problem of food allergies.
Some have suggested that it “dilutes the digestive juices.” Using large quantities of water to wash down food rather than taking the time to chew thoroughly is a practice to be avoided.
Digestive enzymes are large, complex protein molecules, and thus we may sensitize to them more easily than to other supplements.
www.food-allergy.org /root2.html   (1480 words)

 Understanding Digestion, Assimilation And Enzyme Nutrition
Digestive problems and stool abnormalities may be present in a large portion of children with autism.
Rather than continuously treating the symptoms of poor digestion (gas, heartburn, nausea, burping, bloating, upset stomach, acid indigestion, diarrhea), the logical remedy for actually correcting this problem is to improve the person’s ability to digest and assimilate the nutrients from their food.
It is antiparasitic, is a carminative, and stimulates the digestive tract.
www.extremehealthusa.com /digestive.html   (6113 words)

The job of the digestive system is to change the food we eat into our flesh, blood, actions, thoughts and feelings.
The digestive system consists of the mouth, esophagus, stomach, small and large intestine, liver, gallbladder and the part of the pancreas that produces enzymes.
As the food moves along the intestine digestive enzymes from the pancreas and bile from the gallbladder spray it.
members.aol.com /chemibalance/digestion.htm   (1537 words)

 Digestion - Cats Encyclopedia   (Site not responding. Last check: 2007-10-07)
In the stomach, food is churned and thoroughly mixed with acid and other digestive enzymes with digestive fluid to further decompose it chemically.
After being processed in the stomach, food is passed to the small intestine through the pyloric sphincter where it is further mixed with secretions such as bile, which helps aid in fat digestion, and the enzymes maltase, lactase and sucrase, to process sugars.
Fungi also are very effective at digesting organic material in a saprobiontic manner, releasing digestive enzymes externally and then absorbing the digested products.
www.cats.tiptophot.com /cats/index.php?title=Digestion   (590 words)

 Optimal Digestion.
Digestion can often be more important than improving the way you breathe or what you eat.
Although fat digestion is not concentrated in the stomach, gastric lipase is the digestive to attend to this, and will digest egg yolk and cream, since they are already emulsified fats.
When starch is eaten, it is partially digested and transformed to maltose by both the saliva enzymes and pancreatic enzymes called amylases.
www.breathing.com /optimal-digestion.htm   (4568 words)

The primary digestive organs do most of the work of digesting solid foods and the accessory organs help process the nutrients, by producing bile, and secreting digestive enzymes.
Fat is also digested in the small intestine when bile (from the liver) emulsifies fats and lipase(from the pancreas) break down triglycerides to fatty acids and monoglycerides.
This is a muscular valve which opens and closes to allow the partially digested food into the intestine for further digestion and absorption.
bioweb.wku.edu /courses/BIOL115/Wyatt/Anatomy/Digestion/Digestive1.htm   (961 words)

 The Real Deal on the Digestive System
And the digestive system will be busy at work on your chewed-up lunch for the next few hours - or sometimes days - depending upon what you've eaten.
It's part of the digestive tract, but it doesn't seem to do anything, though it can cause big problems, because it sometimes gets infected and needs to be removed.
The digestive system is a pretty important part of your body.
kidshealth.org /kid/body/digest_noSW.html   (1297 words)

 the digestive system
Digestion proper, which is the mechanical and chemical breakdown of food into particles/molecules small enough to pass into the blood.
The human digestive system, as shown in Figure 2, is a coiled, muscular tube (6-9 meters long when fully extended) stretching from the mouth to the anus.
Carbohydrate digestion, begun by salivary amylase in the mouth, continues in the bolus as it passes to the stomach.
www.emc.maricopa.edu /faculty/farabee/BIOBK/BioBookDIGEST.html   (4162 words)

 Digestive System
The digestive system is made up of the alimentary canal and the other abdominal organs that play a part in digestion, such as the liver and pancreas.
The alimentary canal (also called the digestive tract) is the long tube of organs — including the esophagus, the stomach, and the intestines — that runs from the mouth to the anus.
A digestive enzyme called amylase (pronounced: ah-meh-lace), which is found in saliva, starts to break down some of the carbohydrates (starches and sugars) in the food even before it leaves the mouth.
www.kidshealth.org /teen/your_body/body_basics/digestive_system.html   (2228 words)

 Digestion. Introduction.
Digestion means breaking down insoluble food into small soluble molecules which can be absorbed into the bloodstream.
Carbohydrates supply energy for the process of cellular respiration, proteins are the building blocks for the growth and repair of tissues while fats make a good energy store.
Without the process of digestion, these nutrients would remain locked in food and unavailable to the body.
www.schoolscience.co.uk /content/4/biology/abpi/digestion   (201 words)

Digestive enzymes are secreted by the tract or by glands nearby.
Function is to ingest food, digest to small molecules, absorb nutrients and eliminate wastes.
Digestive action in the small intestine (pancreatic amylase) converts maltose to glucose.
www.hartnell.cc.ca.us /faculty/asteinhardt/mywebs/digestion.htm   (760 words)

The food is mixed with digestive enzymes and slime with the muscular movements in the gizzard and which connects with vestibule.
The C elements reside in columnar cells, which are considered to be digestive cells and the K elements are associated with the supposedly excretory pyramidal cells.
The digestion of the food is partly done by adding enzymes by the snail itself and partly by the micro-organisms in the intestine.
www.applesnail.net /content/anatomy/digestion.php   (1952 words)

 Herbert M. Shelton: Efficient Digestion
That digestion is not very efficient, is shown, however, by gas, sour eructations, discomforts, foul stools and the presence of large quantities of undigested food in the stools.
Good digestion depends upon a number of factors, but simplicity of meals with combin ations of foods that do not overstep the known enzymic limitations is one of the most important of these factors.
It is often asserted that "normal (human) digestive tracts have been coping with such combinations for centuries without a whim per," but such a statement is based, not on fact, but on ignorance of the history of mankind's eating practices as well as upon an ignoring of the facts of contemporary human suffering.
chetday.com /efdigest.html   (1512 words)

 Digestion - Indigestion - Ayurveda - kitchendoctor.com
It is availability of fire that determines the production of gastric juices: hydrochloric acid, bile, enzymes, in short the caustic chemicals that are required for the breakdown of food and its conversion into micronutrients that can be assimilated by the body and bulk matter that needs to be eliminated.
The theory here is that when one's digestive power is limited, one must get the needed nutrition from foods that are easy to digest.
While fresh peaches and pears are usually digestible, they are not nearly as sour as most berries, again not strawberries so much as raspberries, blueberries, and gooseberries.
www.kitchendoctor.com /Ayurveda/digestion.html   (1285 words)

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