ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Upper trachea. The interior of the trachea is visible, along with the rings of cartilage that hold the airway open. The upper ribs are either side, with the oesophagus (gullet) at lower centre. This scan is of a 45-year-old man.
Model release not required. Property release not required.