The caecum is the first part of the large intestine. The caecum has many functions. One function is to hold liquids from the small intestine. When food is digested through the small intestines, the food turns into liquid and the caecum holds that liquid. Another function of the caecum is to absorb all the salts and electrolytes from the liquid it holds. The caecum takes salts and electrolytes like potassium and sodium and these are then absorbed into the mucus membrane of the caecum to be absorbed into the body. Then another function is to lubricate the waste that moves on to the rest of the large intestine. The mucus on the caecum lubricates the waste so that it can move through the the large intestines. Then lastly, it breaks down the cellulose
