| Another factor inhibiting the finch is a high level of infection by an endoparasitic mite which affects its respiratory system. |
| The etiologic agent in respiratory system injury caused by organic dusts is unclear. |
| The conducting portion of the respiratory system includes the nasal cavity, paranasal sinuses, nasopharynx, larynx, trachea, and bronchi. |
| Breathing in a lungful of Tehran air is a full-frontal assault on the respiratory system. |
| While caffeine primarily is active in the brain and muscles, theophylline is active in stimulating the respiratory system, heart and kidneys. |
| In all but the most extraordinary conditions, pneumatized bones are the only traces of the respiratory system that fossilize. |
