The Human Digestive System | Alimentary Canal | Diseases
June 29, 2020
What is the human digestive system?
|Digestive System Diagram
The concept of the human digestive system is one of the most important devices in the human body and. Is responsible for breaking down food and delivering food to the heart and blood vessels to be used. And distributed to the rest of the body.
The digestive system consists of several organs that start from the mouth opening to the anus. And the length of the device Digestion 9 meters. The main components of the digestive system: The digestive system consists of the main organs. The mouth, pharynx, oesophagus, stomach, small and large intestine. Secondary organs:
The digestive system consists of secondary organs which are:
Teeth, salivary glands
, tongue, liver, gallbladder
, pancreas, and each organ is responsible for completing a specific task to complete the main process which is digestion.
The way the digestive system works The digestive system is lined from the inside with a membrane known as the mucous membrane which is present in the mouth, stomach, and small intestine. This membrane contains small glands that secrete substances that aid in the digestion process.
During this process, the process of transporting food to the rest of the body, which is done in the digestive system, is the process of breaking down food and breaking it down into small particles. That is easy to transport in the body for benefit and absorption.
The digestive system performs complex processes by enzymes and chemicals to convert food into amino, fatty, and sugary acids that are transported into the blood for transport to the rest of the body. The way of digestion in a row The movement of food from the mouth to the anus is considered one of the most important basics of the work of the digestive system, which is carried out through four stages, namely:
Food intake: the process of reaching food to the mouth and placing it inside. Chewing process: This process is done in the mouth to break up and break down large food particles into very small particles. Swallowing process: After breaking up food into small particles, it is possible to swallow the food inside, by entering food from the mouth into the stomach through the passage of the pharynx and oesophagus. Roundworm: It is a group of continuous contractions that move regularly and passes food from the mouth to the stomach, after which the osteotomy is broken down into small particles that are easily absorbed.
How does the digestive system work?
The digestive system is one of the important organs in the body that cannot be dispensed with in any way. It is considered the main source for providing the body with energy and the various substances it needs to carry out various vital processes inside the cells and in various parts of the body, and the digestive system is one of the micro organs in the body.
The human being, which is considered one of the miracles in the human body, which scientists have been unable to create for its great precision and the integration of its parts with each other. The human digestive system begins with the mouth, which is considered the entrance to the human digestive system. And the energy entrance to the human body, as when we enter food into the body, the digestion process begins with chewing food, because when we grind food using teeth we do the first process of breaking the links in food to facilitate digestion. And, whenever The period of chewing food in the mouth increased the efficiency of the digestion process later, as the salivary glands in the mouth, secrete saliva during the process of chewing that mixes with food and breaks down the main, especially starchy materials to simpler sugars.
The player helps in the process of tasting food and is easy to swallow, as It moisturizes the food. After swallowing food, food is directed to the pharynx, and the epiglottis
inside the pharynx closes the entrance to the throat to prevent food from entering it and causing suffocation.
|Liver and Gallballader
The food then turns into the esophagus, which is a hollow muscular tube and pushes food into the stomach through its contracting movements, and when the food arrives Into the stomach, the main digestion process begins, as the stomach expands according to the amount of food inside it and digests the food by moving muscles and mixing them with the gastric juices
, which are made up of ten per cent of hydrochloric acid
and the rest of the water, so they break down the protein materials and convert them into simple materials that the cells can benefit from. After that, the food is directed to the small intestine, which secretes the juices on the materials coming from the stomach, which are the pancreatic and bile juices
and intestinal enzymes, so that in the small intestine, the process of digesting nutrients such as proteins, sugars and fats is completed.
The body and the length of the small intestine reach seven meters wrapped inside the abdomen in addition to the presence of protrusions in it to increase the efficiency of food absorption, and in the end, the food or the remainder of it is directed to the large intestine in which the rest of the water is absorbed in addition to food analysis By bacteria in the stomach, waste is accumulated in the large intestine for excretion through the anus, which is the outlet of the digestive system.
What are the diseases of the digestive system?
The human digestive system is a series of processes that convert food into the basic nutrients that are absorbed into the body and move unused materials “waste” out of the body. It is essential for good health that the digestive system works well, as the body cannot feed or dispose of waste What stopped working. Digestion begins with chewing through the teeth, which are part of the skeletal system, and play a major role in the digestion process.
In carnivores, teeth are designed to kill and break down the meat. Just as herbivores’ teeth grind plants and other nutrients to facilitate digestion, the saliva secreted from the salivary glands in the mouth and contains the salivary amylase enzyme, which breaks down starch. Swallowing goes on chewing food into the oesophagus, as it passes through swallowing and the lower pharynx.
At this point, the food takes the form of a bolus – a small round mass – and digestion becomes involuntary. It passes a series of muscle cramps, called peristalsis, through which the food is transported to the rest of the system. It flows from the oesophagus to the stomach. And it completes the destiny until they go with blood in the vessels or get rid of it with waste. This is the fate of everything that enters the mouth. * Diseases of the digestive system: –
Many problems can affect the digestive system, including the occurrence of abdominal pain, or the presence of blood in the stool, and flatulence especially if they are permanent, or constipation as well as diarrhoea, heartburn, suffering from incontinence and nausea Vomiting and difficulty swallowing. Among the widely known diseases of the digestive system is colon cancer. This is usually slow-growing cancer and can often be saved if detected early.
Many diseases and conditions are related to the digestive system – including irritable bowel syndrome
, lactose intolerance, blockages, esophageal reflux
, Crohn’s disease, and celiac disease, as well as suffering from stomach ulcers and hiatal hernia – which can be chronic and difficult to diagnose and treat. All of these diseases are associated with the digestive system and with the food we eat, and many of those who suffer from the above “one of the aforementioned diseases
” must restrict their diets.
Video Courtesy: Tabrez Alam