This asymmetry is often temporary and part of the normal cycle of the nasal passages. Specialized olfactory receptor neurons located high in the nasal cavity detect these molecules and transmit signals directly to the olfactory bulb in the brain.
The Evolutionary Role of Nostril Design
This asymmetry is often temporary and part of the normal cycle of the nasal passages. Function in Respiration Biologically, the primary role of the nostrils is to serve as the official air intake for the lungs.
One nostril may be slightly more congested or have higher airflow than the other at any given time. Internally, the pathway leads past the nasal vestibule, a region lined with coarse hairs (vibrissae) and sebaceous glands, and into the nasal cavity proper.
The Evolutionary Role of Nostril Design and Asymmetry
Because humans breathe continuously, the nostrils ensure a constant sampling of the chemical environment, allowing for the immediate identification of threats like smoke or the pleasure of aromas like food. This cavity is divided by the nasal septum and contains the turbinates, scroll-like bones that increase the internal surface area essential for air processing.
More About What is nostrils
Looking at What is nostrils from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on What is nostrils can make the topic easier to follow by connecting earlier points with a few simple takeaways.
