What is the appendix for

The appendix is ​​a very important organ in the body and is very close to the normal body, so if there is inflammation in the whole body, the appendix may be involved. Inflammation of the appendix often occurs. Many people experience severe abdominal pain or suddenly faint from the pain. This does not necessarily mean that there is a serious illness in the body, it may just be appendicitis. Therefore, everyone should do regular inspections and prevention of the appendix to avoid the onset of appendicitis.

Location of the appendix

The appendix display rate of 31 cadaver specimens was 100%. The root of the appendix was found to be located retrocecally in 27 cases (27/31, 87.1%) and at the tip of the cecum in 4 cases (4/31, 12.9%). The distance from the appendix to the tip of the cecum is mostly concentrated in the range of 1-4 cm, with an average of 2.5 cm and rarely exceeding 4.2 cm.

The shape and size of the appendix

The appendix is ​​1.58cm long and 4-7mm in diameter. The shape of the appendix was divided into: 18 cases (18/31, 58%) were vermiform, 10 cases (10/31, 32.3%) were tubular, and 3 cases (3/31, 9.7%) were short tubular with a blind tube at the distal end. In 18 cases (18/31, 58%), the appendix had uniform diameter, in 13 cases (13/31, 42%), the proximal part was thin and the distal part was thickened, and in 1 case (1/13, 7.7%), the distal part was thickened and dilated like beads. The diameter of the appendix is ​​mostly concentrated in the range of 4.6-5.4 mm, with an average of 5 mm. The maximum length of the appendix of the 31 cadavers in this group was 9 cm, the minimum was 1.7 cm, and the average was 5.2 cm. Among them, 1 case had a length equal to the average, 14 cases had a length less than the average, and 16 cases had a length greater than the average. The frequency of appendix length showed a non-normal distribution and had a large variation.

Course of the appendix

The shape of the appendix is ​​quite complex and is divided into the root of the appendix, the proximal part, and the distal part. The root of the appendix was located on the posterior medial wall of the cecum in 27 cases (27/31, 87.1%), of which the proximal part of the appendix was located in front of the terminal ileum in 14 cases (14/27, 51.9%), behind the terminal ileum in 12 cases (14/31, 44.4%), and under the serosa behind the cecum in 1 case (1/27, 3.7%), running from the lower left to the upper right.

In 4 cases (4/31, 12.9%), the root of the appendix was located at the tip of the cecum, of which the proximal part of the appendix was located under the cecum before the terminal ileum in 3 cases and behind the terminal ileum in 1 case. The distal part of the appendix had more variations, with 18 cases (18/31, 58.1%) to the left, 7 cases (7/31, 22.6%) to the right, 3 cases (3/31, 9.6%) to the upper left, 1 case (1/31, 3%) to the upper right, 1 case (1/31, 3%) to the left in an M-shape, and 1 case (1/31, 3%) located in the left pelvic cavity.