The digestive system is the important system of the human body that provides nutrients, foods, and everything to the body. The digestive system diagram is a sketch of the whole system. In this article, we will discuss the definition, parts, the function of the digestive system.
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The digestive system is the system of the body that is consists of the gastrointestinal tract and related other organs, the main function of the digestive system is to cut the food from large pieces into small pieces until it becomes as small as it could be easily absorbed.
Parts of the digestive system:
The digestive system consists of different parts, and every part has a different function. These are parts of the digestive system.
Food in the mouth:
Food enters the digestive system through the mouth, where it is cut into smaller pieces and mixed with the saliva and then pushed into the esophagus. There are many functions performed in the mouth like the taste, selection of food through the taste buds, etc. Food is cut in the mouth with the help of teeth and saliva is produced by the salivary glands. Some absorption of food like carbohydrates is also done in the mouth.
Food in the esophagus:
Food is pushed into the esophagus from the mouth here food pass through the gut with the help of peristalsis movements and finally, it reached the stomach. There is a sphincter between the esophagus and stomach called as Lower esophagus sphincter. Food into the stomach through the lower esophagus sphincter.
Food in Stomach:
Food enters the stomach through the lower esophagus sphincter. When food reached is stomach the stomach secretes acids and enzymes that help in the churning of the food. Here food is divided into fine particles and a liquid is formed that is called chyme. Then this chyme moves towards the pyloric sphincter. Thus chyme enters into the small intestine with the help of a pyloric sphincter from the stomach. Food remains in the stomach for about 6-8 hours.
When food reached the small intestine then their secretions add to the food and these secretions come from the bile, pancreatic, and small intestine’s secretions.
In the small intestine complete breakdown of the proteins, carbohydrates and fats take place.
The nutrients are absorbed in the small intestine and food remains in the small intestine for about 2-6 hours.
Food in the large intestine:
Food enters from the small intestine to the large intestine through the ileocecal valve. Almost all the absorption takes place before chyme leaving the large intestine, thus the remaining is called feces. All essential vitamins and nutrients absorption has done in the large intestine.
Stool & Feces in Rectum and Anus:
The remaining that enters into the rectum and then leave the body through the anus is called stool. Stool store in the rectum and then when rectum filled, then it is removed from the body through the anus. There is a sphincter at the end of the anus that controls the release of the stool. Both internal and external sphincter (group of muscles) control the release of stool.
Thus digestive system work. We have discussed a short work on the digestive system.
I am a Nutrition and Diet consultant at Nishtar Hospital Multan registered in 2019. Expert in Human Nutrition and Dietetics. Now providing consultant Nutritionist and Dietician on Upwork. I design weight loss diet plans, weight gain diet plans, diabetes diet plans, celiac disease diet plans, disease management diet plans, and nutritional recommendations, and author many research articles.