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in the process of digestion. The process of digestion is not simple and involves many steps. Let's learn more about the digestive system through a series of facts that illustrate the amazing functioning of the human body. The organs of the digestive system are hollow, and the inner walls are lined and mucous membrane (mucosa) Nubiotix The mucous membrane that lines the mouth, stomach and small intestine, consists of glands that secrete digestive to aid in digestion. The organs also contain a smooth muscle layer that assists in breaking down the food particles. This layer contracts and propels the food particles downwards along the digestive
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