<h2>Lysoso<em>mes.Lysosomes can be thought of as the waste management system of a cell. These are the organelles that break down dead cell components, food, and foreign matter, such as viruses and bacteria.</em></h2>
Viruses because children immune system cannot repeal parasites (no one can) or bacteria that is why we wash or hands. Fungi is not something we can repeal either.
This muscle opens and lets food and liquid enter the stomach and closes to prevent the food and liquid from leaking back into the esophagus, however if it is not working properly it could open and close at the wrong times
