Panting in dogs: unidirectional air flow over evaporative surfaces.
In dogs which are panting due to a heat load, most of the respired air enters through the nose and leaves through the mouth. Different patterns of flow are, however, possible. The unidirectional flow over the evaporative (nasal) surfaces is an important mechanism for regulating the amount of heat dissipated in panting.
D000388:Air; D000818:Animals; D001833:Body Temperature Regulation; D003377:Countercurrent Distribution; D004285:Dogs; D006358:Hot Temperature; D009297:Nasal Mucosa / Q000502:physiology; D012143:Respiratory Physiological Phenomena