Asthma is part of the airways in the lung sections. Located at the end of the bronchi, the largest branch points in the airways of the lungs, and ends in the alveoli, the small round sacs where oxygen is exchanged for carbon dioxide in the blood. Bronchodilators are separated bronchi, which contain no cartilage or glands. They are responsible for the control of air distribution and airflow resistance in the lungs. The lungs and their structures are part of the respiratory system, which controls breathing and upper respiratory tract, nose, throat and nose, sinuses and throat and trachea. The air is sucked into the lungs of the upper airway to the alveoli, where the oxygenated blood. carbon dioxide-free oxygen in the blood to move the alveoli and carbon dioxide you breathe out of the respiratory tract.
