Question

Part of bile juice useful in digestion is

• A. bilesalt
• B. bile pigment
• C. bilematrix
• D. all of them

Answer 1

Answer: (A)

Bile is secreted by liver. Its salts, namely, sodium glycocholate and sodium taurocholate. reduce the surface tension of large fat droplets and break them into many small ones. The process is called emulsification, as it produces a fine emulsion of fats in the aqueous intestinal contents. Bile salts also forms a thin coating around tiny fat droplets to keep them from coalescing. The small fat droplets present larger surface area to lipases. This increases lipase action on fats.
Triglycerides $\stackrel{\text{Blle salts}}{\to }$ Emulsified triglycerides