which of these is an example of mechanical digestion?
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Explanation: Mechanical digestion is the physical act of breaking down the food by non-chemical means. Mechanical digestion begins in the mouth by the physical act of mastication (chewing). The specialized teeth break down the food as it is cut by the incisors, torn by the cuspids and ground by the molars.
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In human digestion, proteins in food are broken down into smaller peptide chains by digestive enzymes such as pepsin, trypsin, chymotrypsin, and elastase, and into amino acids by various enzymes such as carboxypeptidase, aminopeptidase, and dipeptidase.
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Mechanical digestion physically breaks down food, like when teeth macerate food into a bolus. The stomach contracts and relaxes in a churning motion. ... Chemical digestion occurs when the bonds within larger food molecules are broken, creating smaller molecules that the body can use.
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Digestion of Carbohydrates During digestion, starches and sugars are broken down both mechanically (e.g. through chewing) and chemically (e.g. by enzymes) into the single units glucose, fructose, and/or galactose, which are absorbed into the blood stream and transported for use as energy throughout the body.
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When your intestines process food, your abdomen may grumble or growl. The walls of the gastrointestinal tract are mostly made up of muscle. When you eat, the walls contract to mix and squeeze the food through your intestines so it can be digested. This process is called peristalsis.
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In a monogastric digestive system, food is chewed, swallowed, and enters a low-pH stomach where protein disassembly begins. From there, the food enters the small intestine where energy is digested and absorbed. Enzymes from the liver and pancreas assist in small intestine digestion.
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The digestive processes are ingestion, propulsion, mechanical digestion, chemical digestion, absorption, and defecation.
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['Ingestion. Food entering into the digestive tract through the mouth.', 'Mechanical processing. Physical manipulation of solid foods. ... ', 'Digestion. Chemical breakdown of food, so it can be absorbed by the digestive epithelium.', 'Secretion. ... ', 'Absorption. ... ', 'Excretion.']
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Mechanical digestion involves physically breaking the food into smaller pieces. ... Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. Chemical digestion begins in the mouth when food mixes with saliva.
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The digestive system ingests and digests food, absorbs released nutrients, and excretes food components that are indigestible. The six activities involved in this process are ingestion, motility, mechanical digestion, chemical digestion, absorption, and defecation.
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A mechanical soft diet is made up of foods that require less chewing than in a regular diet. People on this diet can tolerate a variety of consistencies. Chopped, ground, and puréed foods are included, as well as foods that break apart easily without a knife.
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Overview. The human body uses the process of digestion to break down food into a form that can be absorbed and used for fuel. The organs of the digestive system are the mouth, esophagus, stomach, pancreas, liver, gallbladder, small intestine, large intestine and anus.
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During digestion, starches and sugars are broken down both mechanically (e.g. through chewing) and chemically (e.g. by enzymes) into the single units glucose, fructose, and/or galactose, which are absorbed into the blood stream and transported for use as energy throughout the body.
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The digestive processes are ingestion, propulsion, mechanical digestion, chemical digestion, absorption, and defecation. Some chemical digestion occurs in the mouth.
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Mechanical digestion involves breaking the food up physically, and chemical is breaking it up using the body's substances. ... It is responsible for most of the chemical digestion/absorption inside the body.
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Digestive system. Digestion is the breakdown of carbohydrates, proteins and fats into small soluble substances to be absorbed into the blood. Amylase, proteases and lipases are enzymes that are important in digestion.
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Digestive Processes. The digestive processes are ingestion, propulsion, mechanical digestion, chemical digestion, absorption, and defecation.