Stepwise explain the process of digestion in human beings briefly?

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Answer

firstly the food enters in our mouth which mix with the saliva present in our mouth.the saliva contains salivary amylase which converts the starch present in food in mouth to give sugar.now this food is moved around the mouth while chewing by the muscular tongue.And now the food is sent to stomach by long tube ,whose muscles contract rhythmically in order to push the food

Now ,the food enters the stomach,which is a large organ ,that expands when food enters it,then the muscles of the stomach contain gastric glands which releases hydrochloric acid which creates an acidic medium for the action of enzyme pepsin .it also releases pepsin and mucus ,which protect the lining of stomach from acid.

Then the spincter muscle releases it in small amount into small intestine ,which is longest part of alimentry canal.The small intestine recieves the secretions of liver and pancreas for this purpose.Since food coming from stomach contain large globules of fat which makes difficult for enzyme to act on them.So.bile juice from liver accomplishes this in addition.Bile salt break large globules of fat into small globules,it is same as emulsifying action.

And now the pancreatic juice released by pancreas which contain enzyme like trypsin for digesting protiens ,lipase for breaking emulsified fats.The walls of small intestine contains glands secrete intestinal juice which finally converts protiens into amino acid,carbohydrates into glucose and fat into fatty acid and glycerol.

Now, the inner linig of small intestine has numerous finger like projections called villi,which the surface area for absorption.villi are richly supplied with blood vesselswhich take the absorbed food to each and every cell for growth of body and repair of cells,

Now the rest of the unabsorbed food is sent to large intestine for absroption of more water

and after that the rest of the foof is moved out through anal spintcher.which is the process of egestion

Answer

Saliva is secreted by salivary glands located under the tongue which contains digestive enzymes like salivary amylase, which break down starch into sugar. So, digestion of carbohydrates starts in the mouth itself.

    •    Tongue helps in chewing, moistening, rolling and swallowing of food.

    •   The food from mouth then goes down the oesophagus, which is the food pipe to the stomach, through the movement of walls of oesophagus (peristalsis)

    •   Stomach mixes the food hence received with various digestive juices.

    •   Inner lining of stomach secretes:

                •   Mucus – protects the lining of stomach from being corroded by the acid.

                •   Hydrochloric acid – creates an acidic medium and dissolves bits of food.

                •   Digestive juices – break down protein into simpler substances.

The food from stomach eventually moves into the small intestine.

            •   Digestion in small intestine: It is the longest part (about 7.5 m long) of alimentary canal. It is the site where complete digestion of carbohydrates, proteins, and fats takes place. It gets intestinal juices from two different glands – liver and pancreas that help in the further digestion of food.

Liver is the largest gland of the body and secretes bile juice. Bile juice is stored in the gall bladder and has a significant role in the digestion of fats.

Pancreas has enzymes that help in total digestion of all food components.

    •   The digestive tract and associated glands together constitute the digestive system.

I hope it's helpful for us......

Answer

Process of Digestion in Human Beings

Ingestion

The process of taking food into the body is called ingestion.

It starts in the mouth where food is broken down by teeth and mixed with saliva to form a bolus.

Digestion

Digestion is the process of breaking down food into small molecules that can be absorbed into the bloodstream.

It occurs in the mouth, stomach, and small intestine.

Enzymes in the mouth, stomach, and small intestine break down carbohydrates, proteins, and fats into their smallest components.

These components are absorbed into the bloodstream and transported to the cells of the body.

Absorption

Absorption is the process of taking small molecules from the digestive system into the bloodstream.

Most absorption occurs in the small intestine.

The small intestine is lined with small finger-like projections called villi, which increase the surface area for absorption.

Elimination

Elimination is the process of removing undigested food and waste from the body.

It occurs through the large intestine and rectum.

Undigested food and waste are formed into feces, which are eliminated from the body through the anus.

Overall, the process of digestion in human beings involves the ingestion of food, the breakdown of food into small molecules, the absorption of these molecules into the bloodstream, and the elimination of undigested food and waste from the body. This complex process is essential for providing the body with the nutrients it needs to function properly.

Answer

The digestion begins with mouth itself.

In mouth -- teeth cut the food into small pieces and the enzyme salivary amylase
secreted by salivary gland digests the starch . This slightly digested food is
carried to stomach through peristaltic movement of oesophagus..

In stomach -- enzyme pepsin begins the digestion of proteins in acidic medium provided by HCl..

In small intestine -- complete digestion of food takes place . It receives the secretion of liver and pancreas , alongwith it's own secretion.

Answer

Answer

Digestive Processes. The processes of digestion include six activities: ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and defecation. The first of these processes, ingestion, refers to the entry of food into the alimentary canal through the mouth.

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