3-D Mouth to Throat (IMAGE) Penn State Caption A partially completed 3-D printed airway from nostril to trachea with fine structure of the nasal cavity showing. Credit Rui Ni, Penn State Usage Restrictions non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.