The location of the abdominal organs, if calculated according to the nine divisions of the abdominal division, the organs in the right upper abdomen are mainly the liver and gallbladder, the upper abdomen is mainly the stomach and pancreas, and the organs in the left upper abdomen are mainly the spleen. The right side of the abdomen is mainly the right kidney and the right ureter, the periumbilical area is mainly the small intestine, the left side of the abdomen is mainly the left kidney and the left ureter, and the right lower abdomen is mainly the appendix, the ascending colon, and the right fallopian tube and the right adnexa, and this is for the female patient. The left lower abdomen is mainly the left fallopian tube and ovary, also for women. The lower middle abdomen is mainly for the bladder, the prostate for males, and the uterus for females.