question_answer

  Food does not pass through the digestive system by 'gravity'. You can still digest food even if you are lying down. Explain how food passes through our digestive system.

Answer:

                                      The lining of the esophagus (gullet), stomach and intestines is muscular so that food can be pushed through. This action is called peristalsis. These movements of muscles help the food to pass through the digestive system. (2)