Maxillary Sinuses (image) University of Iowa Share Print E-Mail Caption The maxillary sinuses, those pouches on either side of the human nose, change their size depending on the shape of the nasal cavity, according to a research team led by the University of Iowa. The study shows why the maxillary sinuses in African-origin faces (shown at right) differ from those of European origin. Credit Nathan Holton, University of Iowa Usage Restrictions None Share Print E-Mail 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.