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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.
What else can I help you with?
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.
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.
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.
What is food called when passed through the body?
Food that has been processed by the body is referred to as "digested food" or "digested material." After digestion, the nutrients from the food are absorbed into the bloodstream, while the remaining waste is considered "feces" or "excrement." This waste is ultimately expelled from the body.
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
A long coiled tube in which food is digested and absorbed?
The long coiled tube in which food is digested and absorbed is the small intestine. It is responsible for breaking down food into nutrients and absorbing these nutrients into the bloodstream to be used by the body for energy and other functions. The small intestine is an essential part of the digestive system, where most of the digestion and absorption of nutrients takes place.
In grasshoppers where is food digested and absorbed into the bloodstream?
Food in grasshoppers is digested in the midgut, where enzymes break down the food into smaller molecules that can be absorbed. The nutrients are then absorbed into the bloodstream through the walls of the midgut and transported to the rest of the body for energy and growth.
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
Is your body able to absorb food if it is not chemically digested?
No, the body cannot absorb food that has not undergone the process of chemical digestion. Digestion breaks down food into nutrients that can be absorbed by the body through the walls of the intestines. If food is not chemically digested, the nutrients remain in a form that the body cannot utilize.
