Describe the process of digestion occurring in the large intestine.

(N/A) No significant digestive process occurs in the large intestine.
Functions of the large intestine include:
$(1)$ Absorption of some water,minerals,and certain drugs.
$(2)$ Secretion of mucus,which helps in adhering the waste particles together and lubricating them for an easy passage.
The undigested and unabsorbed substances,known as faeces,enter the caecum of the large intestine through the ileo-caecal valve,which prevents the backflow of faecal matter. These substances are temporarily stored in the rectum until defecation.