Schematic diagram of the circulation system.

Diagram of respiratory system.

Anterior view of the respiratory system during exhalation.

Anatomy of the respiratory system.

Lateral view of the respiratory system during inhalation.

Anterior view of the respiratory system during inhalation.

Lateral view of the head showing the anatomy associated with the upper respiratory system.

Coronal schematic view of the heart and lungs and surrounding viscera.

Lateral view of the respiratory system during exhalation.

Anterior view of the respiratory system within a transparent image of the torso and head. Image includes the nose, mouth, epiglottis, larynx, trachea, bronchus and lungs.

Lateral view of the respiratory system within a transparent image of the torso and head.

Respiratory system, equine