Which organ synthesizes a compound that directly facilitates the mechanical digestion of lipids?A.PancreasB.Salivary glandsC.GallbladderD.Liver

To identify which organ synthesizes a compound that directly facilitates the mechanical digestion of lipids, we need to understand the role of each organ mentioned in the options.

1. Pancreas: It produces pancreatic juices that contain enzymes for digesting carbohydrates, proteins, and fats (lipids). However, its main role is biochemical digestion rather than mechanical.

2. Salivary Glands: They produce saliva, which begins the digestion process for carbohydrates through the enzyme amylase, but they do not play a direct role in lipid digestion.

3. Gallbladder: This organ stores and concentrates bile produced by the liver. Bile contains bile salts that help emulsify fats, aiding in mechanical digestion, but it does not synthesize them.

4. Liver: The liver produces bile salts, which are crucial for the emulsification of lipids, facilitating their mechanical digestion in the small intestine.

Final Answer

The correct answer is D. Liver. The liver synthesizes bile, which facilitates the mechanical digestion of lipids through emulsification.