BILE: Alkaline substance produced in the Liver and stored in the Gall Bladder
FUNCTIONS OF BILE:
FUNCTIONS OF BILE
|
|
Diagram showing Production of Bile
|
FUNCTIONS:
1. NEUTRALISING STOMACH ACID
Enzymes in Small intestine function optimally in Alkaline conditions (optimum pH of 8-14)
However, churning of food in Stomach by Hydrochloric acid creates Acidic environment
Therefore, Bile will neutralise Hydrochloric acid to maintain Alkaline conditions, allowing optimum enzyme activity and increasing the rate of metabolic reactions
2. EMULSIFYING LIPIDS
As the breakdown and digestion of Lipid molecules require a long period of time, Bile is used to emulsify large Lipid molecules into small droplets
Lipid droplets will have a larger surface area to volume ratio, allowing faster breakdown by Lipase into Fatty acids and Glycerol, hence increasing the rate of lipid digestion
|
No comments:
Post a Comment