The digestive system prevents infection through a combination of chemical barriers and physical defenses.
Here's how:
- Acid and Enzymes: The stomach contains strong acid, and the intestines contain enzymes that destroy pathogens, preventing them from causing infection.
- Mucus Barrier: Cells in the gastrointestinal tract secrete mucus, which acts as a physical barrier to trap pathogens and prevent them from attaching to the lining of the digestive system.
In summary, the digestive system uses both chemical and physical defenses to neutralize and eliminate harmful pathogens.
