CT203 Lecture Notes - Lecture 8: Fetus, Complement System, Thymus
Document Summary
The respiratory tract is an important point of entry for pathogens: mucous in the nose and pharynx traps larger particles, in the lower bronchial tree, the muco-ciliary elevator" moves mucous toward the mouth. Food and water contamination are significant sources of illness. The faecal-oral route is an important pathway of infection for a number of: pink eye comes from fecal matter meeting eye. Saliva contains lysozymes, an enzyme that can damage the cell walls of some bacteria and fungi. The high acidity of gastric juices are a first line of defence against infection through the oral consumption of pathogens: h. pylori, has adapted to the acidic environment of the stomach. It is blamed for up to 80% of ulcers. Other reasons: taking too much ibuprofen and: antibodies, antimicrobial substances, and friendly flora are also found acetemetaphin in the gut. Stomach acid is really damaging to the cell walls of bacteria.
