lungs in the form of branches and leaves

respiration breathing inhales exhales bronchi trachea lobes alveoli pulmonary oxygen airways aspiration capillaries cilia pleura diaphragm thoracic ventilation inspiratory expiratory asthma emphysema bronchitis pneumonia tuberculosis pulmonologist spirometry inhaler nebulizer bronchodilators mucus phlegm coughing wheezing dyspnea chest ventilator pneumothorax pneumectomy copd hypoxia hyperventilation pulmonology bronchoscopy inhalation oxygenation sputum