The large and small intestines are not named by their length, so even if the large intestine is shorter than the small intestine, it is still called the large intestine. The small and large intestines differ in form as well as function.
1. Morphological differences: the small intestine starts from the duodenum and connects to the large intestine, which is relatively long, about 4-6 meters, but the lumen is usually thin, about 1.5-4 centimeters, and the intestinal wall surface is smooth, including the finger intestine, jejunum, ileum, etc. The large intestine is relatively short, about 1.5-4 centimeters, and the surface of the intestinal wall is smooth, including the finger intestine, jejunum, and ileum.
While the large intestine is relatively shorter, about 1.5 meters, but the lumen is relatively thicker, about 6 cm – 7 cm or so, the intestinal wall is thinner, including the ascending colon, transverse colon, descending colon, sigmoid colon, rectum and so on.
2. Functional difference: both are important organs of the human body. The small intestine is mainly to help the body digest and absorb part of the food through the stomach to reach the small intestine, food nutrients, such as proteins, vitamins, amino acids, fats, minerals, etc. is absorbed by the mucosa of the small intestine, and give the body nutrients.
The large intestine mainly absorbs the remaining food residue and water from the small intestine, thus producing and storing feces, which is finally excreted from the anus.
Both the large and small intestines are important in the body. If there are any intestinal discomforts, such as abdominal pain, diarrhea, constipation, etc., it is recommended to go to the hospital as early as possible and be given the relevant measures under the guidance of the doctor.