Digestion is one of the most lengthy processes in the human body. Digestion entails a number of processes as well as the use of many organs. The mouth is the starting point, and the anus is the finishing point. The path is also known as the alimentary canal. The alimentary canal includes the mouth, oesophagus, stomach, small intestine, and large intestine. One of these is the small intestine, which performs a crucial function. Let’s look at the role of the small intestine in food digestion.
What is a Small Intestine?
The small intestine is the digestive tract’s longest organ. Villi are millions of tiny finger-like projections that line the small intestine. The surface area of these villi is increased, allowing for more effective food absorption. Many blood arteries exist within these villi, which absorb the digested food and transport it to the circulation. The absorbed food is supplied to each and every cell of the body via the circulation.
Absorption of Food
The small intestine absorbs the digested food into the bloodstream of the human body. The food that has been digested goes through the small intestine walls and into our circulation. Here, vitamins, minerals, proteins, carbs, and lipids are separated from the digested meal. Blood transports all of these nutrients to various cells and tissues.
Role of Enzymes
Pancreatic trypsin is an enzyme produced by the pancreas. In the small intestine, trypsin plays an important function. Trypsin is an enzyme that aids in protein digestion. The enzyme breaks down proteins in the small intestine, continuing the digestion process that began in the stomach.
Small Intestine in Herbivores
Herbivores are creatures that eat plants, leaves, fruits, and other natural items for their sustenance. For instance, a cow, a goat, and so on. Carnivores are creatures that eat other animals as a source of sustenance. For instance, a lion, a cat, and so on. Because herbivores exclusively eat plants, they require a larger small intestine to digest the cellulose found in them. Carnivores eat other animals, and their diet is easier to digest than that of herbivores. As a result, herbivores have a longer small intestine than carnivores.