When rick pops a handful of peanuts into his mouth at the ballgame, he is engaging specifically in the process of ingestion.
What is ingestion?
- Ingestion is the process of consuming any substance by an organism by swallowing or absorbing it.
- Mostly it is accomplished by eating or drinking (e.g. food, water, medicine, etc.) through the mouth into the GI tract.
- Single cell organisms ingest by absorbing the substances through their cell membrane.
- Ingestion is the first process of digestion.
- After ingestion, food is broken down physically (mastication) and chemically (by enzymes).
- The digested foods are then absorbed through the blood to the cells.
- The digested foods are then converted into the parts of a cell.
- The undigested products are then excreted out as feces.
Learn more about digestion here:
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