Respiratory system and alveolar enlargement simulator

■ The simulator consists of two parts: the respiratory system and alveoli, displaying the nasal cavity, middle turbinate, lower turbinate, oral cavity, soft palate, pharynx, thyroid cartilage, larynx, trachea, bronchi, parietal pleura, upper lobe, lower lobe, pulmonary veins, pulmonary arteries, extraalveolar capillaries, alveoli, bronchioles, alveolar sacs, alveolar walls, etc. Additionally, an enlarged alveolar simulator is attached, displaying the microscopic structure of the alveoli histologically, The process of gas exchange can be well explained, with a total of 33 numerical indicators and corresponding textual explanations.