This creates a bigger space in the chest and the change in pressure makes air flow in through the nose and mouth, come down the windpipe and into the lungs. When humans breathe out, their ...

PSMA also lights up saliva glands, but unexpectedly, other areas in the human head started to shine ... lubricate the upper ...

A coughing, sneezing, 3D-printed model of the human nose and upper airway has ... differences between particles expelled through the nose or mouth. Because these factors impact disease ...

Stifling a sneeze by clamping your nose and mouth shut can cause serious physical damage, doctors are warning. Medics in Leicester treated a 34-year-old man who ruptured his throat while trying to ...