What is the process of nutrient absorption?

Our daily diet, in addition to filling our stomachs, is also key to providing our bodies with the various necessary elements to ensure that our bodies can rotate normally. Therefore, eating is actually a process in which nutrients are absorbed by the body. Many people are concerned about the absorption process of nutrients. Let’s take a closer look at it below.

The process by which water, inorganic salts, vitamins in food, and small molecule nutrients such as glucose, amino acids, glycerol, fatty acids, etc. formed after food digestion enter the blood through the epithelial cells of the digestive tract.

2. Display of absorption in each section of the digestive tract

Large intestine: some water, inorganic salts, vitamins.

Oral: Basically not absorbed.

Stomach: absorbs some water and alcohol.

Small intestine: The main site of absorption, absorbing various nutrients.

1. Large absorption area: There are circular folds on the inner surface, small intestinal villi on the folds, and microvilli on the villus epithelial cells.

2. There are abundant capillaries and lymphatic capillaries in the small intestine villi, which promote absorption.

3. The walls of the villi, capillaries and lymphatic capillaries in the small intestine are very thin: they are composed of a single layer of epithelial cells, which makes it easy for nutrients to pass through and improves the efficiency of absorption.

The above is an introduction to the absorption process of nutrients. I hope it will be helpful to everyone’s understanding. Nutrients are very important for the normal functioning of the human body. Understanding the absorption process of general nutrients can enable us to better understand the principles of body operation, and requires us to develop good living habits and avoid abnormalities in diet.