Final answer:
The first step in the food journey is ingestion, where the food is taken in the mouth.
Step-by-step explanation:
The first step in the food journey is ingestion, where the food is taken in the mouth. Digestion and absorption take place in a series of steps, with special enzymes playing important roles in digesting carbohydrates, proteins, and lipids. Elimination describes the removal of undigested food contents and waste products from the body.
While most absorption occurs in the small intestines, the large intestine is responsible for the final removal of water that remains after the absorptive process of the small intestines.