This is the reason nose have a different forms

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Nose shape is certainly different one person with another person. There are sharp or lengthwise to the front and there are also that looked like entered into the alias pug, well as a number of other variants. But until now nothing knows why the shape of the nose can be different.

To answer her curiosity, Nathan Holton, researchers from the department of orthodontics at the University of Iowa, USA, and his colleagues conducted a computerized tomography scan of the 40 people who participated. Half of the participants are descendants of European-American and some other are African-American or indigenous population from South Africa.

From it, researchers found that the bigger the volume of the nasal cavity, then the greater his maxillary sinus or sac on each side of the nose which is located under the eyes, in both populations. It shows that the maxillary sinus was plays an important role in forming the nose shape variation. According to researchers seem this sinus provide a separate room for the nose.

In addition researchers also found that it there is related to a person's face shape overall. However, when researchers found a number of participants who his face almost the same size, maxillary sinus seen giving a real difference between the participants of European ancestry with African ancestry.

Because the maxillary sinus of participants descendants from European 36 percent bigger than Africa because the Europeans tend to have nose shape which more narrow. "Variations in the nose, this is seems related with the process of person's adaptation towards climate her residence, thing this because the nose must can heat and humidify air that we breathe with good," said Holton.

"That's, why when living in the area that cold climate is fortunately the people who have a nose more narrow so that when he breathes (Inhale), will more much air which enters and make contact with the mucosal surface of the nose that gave him humidity. Nose which more narrow that is which maximize the surface area of the mucosa so that they can keep survive in areas with low temperatures, "he continued.

The study has been published in the journal The Anatomical Record.