Breathe deeply: nose shape is influenced by local climate

The human has his nose in his glorious forms is one of our peculiarities.

whether large, small, large, small or somewhere in between. The scientists are now sniffing some of the factors from the development of the human proboscis. The researchers said Wednesday that a study of three-dimensional images of hundreds of people from East Asia, South Asia, West Africa and Northern European descent with regional climate, in particular temperature and humidity, played a key role in determining the shape of the nose. Wider noses were more common in people with warm and humid climate, they. Smaller noses were more common in the cold and dry climate. Main functions of nasal breathing and smelling. This mucus and blood capillaries warm inside and moisturize the air before it reaches sensitive parts of the airways. Using narrower nasal respiratory contact between breathing air and tissues in the nose can help to increase moisture and heat, the Penn State University geneticist Arslan More, study lead author in the journal PLoS Genetics. “It could be an advantage offered in colder climates. In the warmer climates, the other side was probably true,” said See. Our species was found in Africa some 200,000 years ago and later migrated to other parts of the world. The researchers said that people with the narrow nose can do with a wider nose in colder, drier areas than the better and more offspring, a gradual decline in the nose width. The recognition of the general rule, which is called by Thomson, formulated by the British anatomist and anthropologist Arthur Thomson (1858-1935), people from cold, dry climate tends to make the nose longer and thinner than the people of warm, humid Climate. More said, most previous evidence regarding rule Thomson’s skull measurements of the come, during the study, extended to the analysis of external nose shape.

The researchers examined nose width, nose hole width, nose height, a length of the nose, nasal tip, outer surface and total nasal hole area.

The researchers examined nose width, nose hole width, nose height, the length of the nose, nasal tip, outer surface and total nasal hole area. “What we tested was a very simple hypothesis on the nose, which is probably a very complex evolutionary history.” There is much that we do not know, “said more, eliminating the need to invoke genes to investigate underlying nose. “One can imagine how cultural differences in attractiveness could lead to some of the differences in the nose shape between the populations. For example, larger noses in some populations compared to others than attractive?”