Where is the appendix in the human body?

If you have an irregular lifestyle and don't eat on time every day, you may sometimes feel stomach pain, which is most obvious on both sides of the lower abdomen. You should consider whether it is appendicitis. The cecum is at the tail of the large intestine and is connected to the appendix, but it is easy to confuse the cecum and appendix. You can go to the hospital to take an X-ray for specific examination. The role of the cecum should not be underestimated. It can absorb nutrients from the body and prevent too much loss outside the body.

Cecum: The starting section of the large intestine, also the shortest section of the large intestine, is about 6 to 8 cm long and is located in the lower right part of the abdominal cavity. There is an ileocecal valve at the junction with the ileum, and below is the cecum, which is connected to the appendix by a hole and continues to the ascending colon downward. It is the beginning of the large intestine, sac-shaped, located in the right iliac fossa, and connected to the ileum. The mucous membrane at the entrance of the ileum to the cecum protrudes into the intestinal cavity, forming upper and lower lip-shaped ileocecal valves, which prevent the contents of the large intestine from flowing back into the small intestine.

The cecum is the pouch-like portion at the beginning of the large intestine. Because its distal end is blocked, it is called the cecum. At the distal end of the cecum extends a small tube called the appendix. Because of its small lumen, it is easy to get blocked and become inflamed, which is called appendicitis, commonly known as appendicitis. The cecum, also known as the appendix, is the beginning of the enlarged large intestine. Located in the lower right part of the abdominal cavity, just caudal to where the right iliac fossa ileum enters the large intestine. The human cecum degenerates, and the lower end becomes free and forms a blind sac, which continues upward into the ascending colon, with a hole in the lower part that connects to the appendix. There is an ileocecal valve on the inner wall of the junction with the ascending colon. This valve is a double fold of mucosa that protrudes into the large intestine based on the circular muscle of the small intestine. It is the gateway between the small intestine and the large intestine, and has the function of preventing the contents of the large intestine from flowing back into the small intestine. The appendix rarely becomes inflamed. The so-called "appendicitis" is often a misnomer for appendicitis. In the traditional Chinese medicine document "Nanjing", the appendix is ​​called "Lanmen", which is one of the seven Chongmen.

The cecum is the beginning of the large intestine and is also the shortest segment of the large intestine. The lower end of the cecum begins with an enlarged blind end, and its length varies from person to person. It is generally about 6 to 8 centimeters upward, connected to the end of the ileum and continues into the ascending colon. On the posterior medial wall of the lower end of the cecum, there is a free, elongated intestinal tube called the appendix, or the lumbrical process. Generally, the cecum is similar to the colon, and also has three colon bands on its surface. They are concentrated toward the root of the appendix and continue with the muscular layer of the appendix. Therefore, no matter how the position of the appendix changes, the root of the appendix can be found along the colon belt. In addition, there is an opening of the terminal ileum on the left posterior wall where the cecum and ascending colon transition, which is called the ileocecal orifice. The shape of the opening is mostly an oval fissure, with a semi-lunar mucosal fold on each of its upper and lower edges, called colon valves. The fold on the upper edge is called the upper lip, and its attachment point is approximately at the junction of the ileum and colon, and is approximately horizontal. The fold at the lower edge is called the lower lip. The entire lower lip fold is long and concave, and its attachment point is approximately at the junction of the ileum and cecum. The front and rear ends of the upper and lower lips are connected to each other and extend forward and backward respectively to form the colon valve frenulum. The above structures formed by mucosal folds are all related to the thickening of the circular muscle layer at the terminal ileum at the ileocecal orifice. The thickened circular muscle has the function of a sphincter. It not only prevents the contents of the large intestine from flowing back into the small intestine, but also controls the chyme from entering the large intestine too quickly, so that the chyme can be fully digested and absorbed in the small intestine.