Human body

Question

Describe digestion procesd

gogofox1812 · Answer

Sludge digestion is reduces the total mass or weight of sludge solids in order to destroys pathogens and makes it easier to dewater or dry the sludge. Municipal sewage treatment plants use anaerobic digestion. Thus the digestion process takes place in absence of oxygen. The activated sludge treatment system use aerobic digestion. Thus the digestion takes place in presence of oxygen.

saher.jafri5@gmail.com · Answer

The processes of digestion include six activities: ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and defecation. Ingestion refers to the entry of food into the alimentary canal through the mouth. This act of swallowing, the last voluntary act until defecation, is an example of propulsion, which refers to the movement of food through the digestive tract. Mechanical digestion is a purely physical process that does not change the chemical nature of the food. Instead, it makes the food smaller to increase both surface area and mobility. In chemical digestion, starting in the mouth, digestive secretions break down complex food molecules into their chemical building blocks (for example, proteins into separate amino acids). Food that has been broken down is of no value to the body unless it enters the bloodstream and its nutrients are put to work. This occurs through the process of absorption, which takes place primarily within the small intestine. In defecation, the final step in digestion, undigested materials are removed from the body as feces. In some cases, a single organ is in charge of the digestive process. For example, ingestion occurs only in the mouth and defecation only in the anus. However, most digestive processes involve the interaction of several organs and occur gradually as food moves through the alimentary canal.

Winniefred254 · Answer

Briscoe2020 · Answer

Energy is needed for everyday life, how our bodies absorb the energy from the food we eat is the process of digestion. The digestive track is approximately 7 metres long which starts at your mouth and ends at your anus; the main areas of the digestive track are the mouth, esophagus, stomach, small intestine and large intestine. Food goes through mechanical and chemical digestion, mechanical is when you chew and softening with the aid of saliva while chemical is where the food is broken down by enzymes, digestive juices and and hormones, carbohydrates start to be broken down in the mouth via an enzyme called amylase and triglycerides are broken down with lipase. Once the food is now soft and in its liquidated state it goes down the esophagus via a process of peristalsis which is the wave like contraction that moves the food down the esophagus and into the stomach. Once in the stomach the food will be churning in the stomach and be mixed with hydrochloric acid which kills the bacteria and foreign pathogens in the food just swallowed. Pepsin is also secreted in the stomach which breaks down proteins. The food then enters the small intestine which takes up 6 of the 7 meters of the digestive track and the place where majority of all nutrients are absorbed via a process of active transport at the millions of small villi in the lining of the stomach. The parts of food that cannot be digested is sent to the large intestine, the body will selectively reabsorb the water from the food; while some lipids are reabsorbed if the body needs it. Although digestion is imperative that the waste of digestion be remove from the body and we do this through a process of defecation

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Human body

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