What is the primary function of bile?

Bile plays a crucial role in the digestion process, particularly in the digestion of fats. Its primary function is to emulsify fats, which means it breaks down large fat globules into smaller droplets, increasing the surface area for enzymes, such as lipase, to act on. This emulsification is essential for the efficient digestion and absorption of dietary fats.

Additionally, bile helps to neutralise stomach acid as it enters the small intestine. When food leaves the acidic environment of the stomach, it enters the small intestine where the more alkaline environment is necessary for the proper functioning of digestive enzymes. Bile, produced by the liver and stored in the gallbladder, facilitates this process by contributing to the neutralisation of acidic chyme.

Understanding bile's dual role in emulsifying fats and neutralising stomach acid highlights its importance in the digestive system, particularly in processing and utilizing nutrients effectively.