Answer: Fat is used as the stored form of energy. Fat digestion is done by the help of lipase enzyme. It starts within the mouth by salivary lipase secreted by salivary glands cleaves fat molecules in grinded food particles.
Hence, the first step is ‘through mechanical digestion, the teeth grind food and break it into smaller parts’.
Then from the mouth the food particles reaches the stomach where the gastric juices breakdown the fat.
The partially digested food from the stomach reaches to small intestine.
In small intestine the complete digestion of food takes place by the help of pancreatic lipase.
The completely digested food is then absorbed in small intestine.
The absorbed food enters the circulatory system.
Then, the lymphatic vessel absorbs the digested fat for further process.