Why do all the characters representing human body parts have the radical of the word moon?

This radical is called "meat beside the moon", which means meat instead of the moon. The words it forms are mostly related to various parts of the body, referring to the body. In ancient Chinese characters, it was originally two words, but later it was merged into a radical because of the similarity of Xiao seal, which was collectively called "beside the meat moon"

The words with meat moon side are all related to meat, such as liver, gallbladder, lung, intestine and stomach.

1, liver, one of the digestive organs of human and higher animals. The human liver is in the upper right part of the abdominal cavity and is divided into two pieces. Its main functions are to secrete bile, store glycogen, regulate the metabolism of protein, fat and sugar, detoxify and coagulate blood. Also called liver.

2. Lung, respiratory organs of human beings and higher animals. People's lungs are in the chest cavity, one left and one right, connected with the bronchi. Blood containing carbon dioxide from the heart exchanges gas with alveoli through pulmonary artery, becomes oxygen-containing blood, and flows back to the heart through pulmonary vein. Also called lung.

3, intestine, a part of the digestive organ, shaped like a tube, the upper end is connected with the stomach, and the lower end is connected with the anus. It is divided into two parts: small intestine and large intestine, which play the role of digestion and absorption. Commonly known as intestines.

Extended data:

The characters next to the fleshy moon are also related to the moon, such as: Yin, Chao, hazy and so on. Some Chinese characters were distorted in the process of official translation, and some words unrelated to the month also became next to the word "month".

(1) comes from "moon", such as: hazy.

2 from "meat", such as internal organs.

(3) Originated from "Dan", such as: Qing.

(4) From The Boat, such as Before Me.

(5) The inscription on the right side of "Chao" (the original word of Chao) is written in the shape of running water, which was later changed to "Yue".

(6) "Peng", an pictographic character, looks like a string of shells and a phoenix (Peng is the original word of the phoenix).