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Carbohydrate
Digestion begins in the mouth by salivary amylase and completed in the small intestine by pancreatic amylase. Monosaccharides, such as glucose, galactose and fructose, are produced by the breakdown of polysaccharides and are transported to the intestinal epithelium by facilitated diffusion or active transport. Facilitated diffusion moves the sugars to the bloodstream.
Protein
Proteins are broken down to peptide fragments by pepsin in the stomach, and by pancreatic trypsin and chemotrypsin in the small intestine. The fragments are then digested to free amino acids by carboxypeptidase from the pancreas and aminopeptidase from the intestinal epithelium. Free amino acids enter the epithelium by secondary active transport and leave it by facilitated diffusion. Small amounts of intact proteins can enter interstitial fluid by endo- and exocytosis.
Fat
Fat digestion occurs by pancreatic lipase in small intestine. A monoglyceride and two fatty acids are produced in the digestive process. Large lipid droplets are first broken down into smaller droplets, by a process called emulsification. Emulsification is driven by mechanical disruption (by contractile activity of GI tract) and emulsifying agents (amphipathic bile salts). Pancreatic colipase binds the water-soluble lipase to the lipid substrate.
Digested products and bile salts form amphipathic micelles. These micelles keep the insoluble products in soluble aggregates from which small amounts are released and absorbed by epithelial cells via diffusion. Free fatty acids and monoglycerides then recombine into triacylglycerols at the smooth ER, are processed further in the Golgi and enter the interstitial fluid as droplets called chylomicrons, which are then taken up by the lacteals in the intestine.
Vitamins
Fat-soluble vitamins are absorbed and stored along with fats. Most water-soluble vitamins are absorbed by diffusion or mediated transport. Vitamin B12, because of its large size and charged nature, first binds to a protein, called intrinsic factor, which is secreted by the stomach epithelium, and is then absorbed by endocytosis.
Water
The stomach absorbs some water but most is absorbed at small intestine by diffusion.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoDigested nutrients are mainly absorbed into the bloodstream through the walls of the small intestine.
Wiki User
∙ 11y agoDifferent nutrients are digested in different parts in the body. For example proteins are digested in the small intestine.
Wiki User
∙ 13y agoPrimarily in the intestines.
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Organ were digested food is absorbed?
Food is broken down or digested in the stomach but the nutrients are not absorbed in the stomach. Nutrients from digested food are primarily absorbed in the small intestine.
Why should food be digested well in your body?
Food should be digested well so that the important nutrients inside food can be more easily absorbed.
Where in the body does absorption of food take place?
The lumen is the cavity where digested food passes through and from where nutrients are absorbed, in the small intestine.
What is the function of gut?
The gut is where food is digested, nutrients are absorbed into the bloodstream, and indigestible waste moves through and leaves the body.
How does food that is not digested get out of the body?
The rest of the food that is not absorbed into your body is defecated.
How is assimilation different from absorption of nutrients of digested food?
Absorption is whereby the digested food substances are entering our bloodstream. Assimilation is whereby the body makes use of these absorbed food substances that has entered our blood
What do animals do with their food once ingested?
Animals digest their food through a series of processes that break down the nutrients into smaller, absorbable molecules. These nutrients are then absorbed into the bloodstream and used for energy, growth, and repair of body tissues. Waste products that cannot be digested are eliminated from the body as feces.
Why should the food be digested system?
so that the nutrients are absorbed to the blood stream
Which system will the digestive system work with to ensure that your body gets the nutrients from the food you eat?
When nutrients are digested they are then absorbed into the blood stream. The cardiovascular system then distributes those nutrients to the different areas of the body that are in need of them.
How is digested food carried to your cells?
The digested food is in form of glucose which is broken down in mitochondria to release energy.
Food is digested in the?
i dont know the answer but its not the small intestine. The small intestine is a long folded tube inside the body attached to the stomach where nutrients in the food are absorbed.
If the small intestine is shorter what will happen to the digested food?
Not all or less digested food will be absorbed by the body.
