Respiratory illness 19 April, 2020
Respiratory system (Spotlight on: Russell Malcolm) Problems with the respiratory tract are the most common reason for patients visiting their GPs. This is because our system of airways is a very vulnerable interface with our environment. Consequently it is a way in for viruses, bacteria, potential allergens, pollutants and irritants and it is the primary location for the many illnesses associated with these triggers. Mammals have evolved many defence mechanisms to address these airborne challenges. Our surface immunity is a very complex entity which involves: agents that we secrete into the surface mucus; agents carried in the lymphatic ducts, and agents borne by the blood supply. The various specialised cells, antibodies and enzymes involved in these processes also require a number of balancing mechanisms including our ability to: • invoke a fever on demand; • generate a protective catarrh; • preserve the physical movement of air and secretions; • dynamicall...