840x1200pxHuman Respiratory System illustration, pulmonary anatomy, trachea structure, respiratory organ function, bronchial tree, alveoli exchange, thoracic cavity
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1200x1200pxlung anatomy, respiratory system illustration, pulmonary alveoli structure, trachea and bronchi, human lung function, diaphragm movement, breathing process diagram
578x616pxBronchus anatomy, respiratory system illustration, pulmonary alveoli structure, creative lung art, human respiratory health, medical respiratory diagram, tree-like lung branches
