Explain the process of digestion in human body.?

Question

Answer

Mouth. The mouth is the beginning of the digestive tract. In fact, digestion starts here as soon as you take the first bite of a meal. Chewing breaks the food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use

Answer

$!MPL€____The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The process of digestion has many stages. The first stage is the cephalic phase of digestion which begins with gastric secretions in response to the sight and smell of food. The next stage starts in the mouth.

Chewing, in which food is mixed with saliva, begins the mechanical process of digestion. This produces a bolus which can be swallowed down the esophagus to enter the stomach. Here it is mixed with gastric acid until it passes into the duodenum where it is mixed with a number of enzymes produced by the pancreas. Saliva also contains a catalytic enzyme called amylase which starts to act on food in the mouth. Another digestive enzyme called lingual lipase is secreted by some of the lingual papillae on the tongue and also from serous glands in the main salivary glands. Digestion is helped by the chewing of food carried out by the muscles of mastication, by the teeth, and also by the contractions of peristalsis, and segmentation. Gastric acid, and the production of mucus in the stomach, are essential for the continuation of digestion.

Peristalsis is the rhythmic contraction of muscles that begins in the esophagus and continues along the wall of the stomach and the rest of the gastrointestinal tract. This initially results in the production of chyme which when fully broken down in the small intestine is absorbed as chyle into the lymphatic system. Most of the digestion of food takes place in the small intestine. Water and some minerals are reabsorbed back into the blood in the colon of the large intestine. The waste products of digestion (feces) are defecated from the anus via the rectum.

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Answer

Answer

'Digestion is the process in which the intake of food is converted into energy and this energy is supplied to various body parts.

It involves below listed steps:

Ingestion: It is defined as taking the 'food into the mouth'.

Mechanical processing: It involves physically cutting, tearing, and grinding food with the help of teeth.

Digestion: It mainly occurs in stomach.

Secretion: Various enzymes are involved in the 'digestion' of food.

Absorption: It mainly occurs in intestine.

Excretion: It involves expelling wastages from our body.'

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Answer

DIGESTION PROCESS

the human digestive system consist of the gastrointestinal track plus the necessary organs of digestion . digestion involved the breackdown of food into a smaller and smaller components,. until they can be Absorbed and assimilated into the body .the process of digestion has many stages

it starts from chewing to stomach

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Answer

Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. ... Chewing, in which the food is mixed with saliva, begins the mechanical process of digestion. This produces a bolus which can be swallowed down the esophagus to enter the stomach.

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.

What are the 2 types of digestion?

There are two kinds of digestion: mechanical and chemical. Mechanical digestion involves physically breaking the food into smaller pieces. Mechanical digestion begins in the mouth as the food is chewed. Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells.

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Answer

Digestive system started from mouth and

Answer

The mouth is the beginning of the digestive tract. In fact, digestion starts here as soon as you take the first bite of a meal. Chewing breaks the food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use.

Also called the pharynx, the throat is the next destination for food you've eaten. From here, food travels to the esophagus or swallowing tube.

Esophagus

The esophagus is a muscular tube extending from the pharynx to the stomach. By means of a series of contractions, called peristalsis, the esophagus delivers food to the stomach. Just before the connection to the stomach there is a 'zone of high pressure,' called the lower esophageal sphincter; this is a 'valve' meant to keep food from passing backwards into the esogohagus...

Answer

The mouth is the beginning of the digestive tract. In fact, digestion starts here as soon as you take the first bite of a meal. Chewing breaks the food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use

Answer

Digestion is the complex process by which the food we consume is broken down into smaller molecules that our body can absorb and utilize for energy, growth, and repair. It involves various organs and enzymes working together to convert food into nutrients. Let's explore the detailed process of digestion in the human body:

Ingestion:
The process of digestion begins with ingestion, which is the intake of food through the mouth.

Mechanical Digestion:
1. Chewing: The teeth break down food into smaller pieces, increasing its surface area for effective digestion.
2. Swallowing: The tongue pushes the food towards the back of the throat, and it enters the esophagus.

Chemical Digestion:
1. Saliva: Salivary glands secrete saliva containing enzymes like amylase, which starts the breakdown of carbohydrates in the mouth.
2. Esophagus: The esophagus carries the food from the mouth to the stomach using rhythmic contractions called peristalsis.

Stomach:
1. Gastric Juices: The stomach secretes gastric juices containing hydrochloric acid and enzymes like pepsin, which break down proteins.
2. Churning: The muscular walls of the stomach contract, mixing the food with gastric juices to form a semi-liquid mixture called chyme.

Small Intestine:
1. Pancreatic Enzymes: The pancreas secretes pancreatic enzymes, including amylase, lipase, and proteases, which further break down carbohydrates, fats, and proteins.
2. Bile: The liver produces bile, stored in the gallbladder, which is released into the small intestine. Bile helps in the breakdown and absorption of fats.
3. Absorption: The inner lining of the small intestine is covered in tiny finger-like projections called villi, which increase the surface area for nutrient absorption into the bloodstream.

Large Intestine:
1. Absorption of Water and Minerals: The large intestine absorbs water, electrolytes, and certain vitamins produced by intestinal bacteria.
2. Formation of Feces: The remaining undigested and unabsorbed materials form feces.
3. Elimination: Feces are stored in the rectum and eliminated through the anus during defecation.

Conclusion:
The process of digestion involves both mechanical and chemical processes to break down food into smaller molecules. It begins in the mouth, continues in the stomach and small intestine, and ends in the large intestine. Each organ plays a vital role in the digestion and absorption of nutrients, enabling our body to obtain energy and essential substances for its functioning.

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