There are 3 major parts of the respiratory system. the airway, the lungs, and the muscles of respiration. Human body require a constant stream of oxygen to stay alive. The respiratory system provides oxygen to the body’s cells while removing carbon dioxide, a waste product that can be lethal if allowed to accumulate. • Asthma • Allergic Bronchial Asthma • Bronchitis Acute / Chronic • Allergic Rhinitis / Recurrent cough and cold in children • Tonsillitis Acute / Chronic.