Nasal cavity and maxillary sinuses form variation among modern humans of Asian descent.

Autor: Evteev AA; Anuchin's Research Institute and Museum of Anthropology, Lomonosov Moscow State University, Moscow, Russia., Grosheva AN; Vavilov Institute of General Genetics, Russian Academy of Science, Moscow, Russia.
Jazyk: angličtina
Zdroj: American journal of physical anthropology [Am J Phys Anthropol] 2019 Jul; Vol. 169 (3), pp. 513-525. Date of Electronic Publication: 2019 Apr 15.
DOI: 10.1002/ajpa.23841
Abstrakt: Objectives: This study explores variation, covariation, and ecogeographic pattern of the nasal cavity, maxillary sinuses, and external midfacial skeleton across 15 populations of east Asian origin inhabiting the Far East, Siberia, Alaska and Greenland.
Materials and Methods: We have collected linear measurements of the internal nasal cavity, maxillary sinus and external midfacial skeleton as well as volumes and surface areas of three-dimensional models of the cavity. A set of seven climatic variables, mtDNA and Y-chromosome genetic matrices and a matrix of geographic distances were also utilized.
Results: A strong association between form of the nasal cavity and climate was found, whereby all north Asian groups display increased volumes, areas and lengths of the cavity, and surface area to volume ratios (SA/V). Most of Siberian groups exhibit not only large and long, but also wide and tall nasal cavity. The Eskimo-Aleutian speaking groups possess cavities that are vertically short and narrow but of a high SA/V ratio. The sinuses exhibit an exceptionally high level of within- and between-group variation which supports the views on the sinus as an architectural byproduct. Both volume and area of the nasal cavity can be reliably estimated based on a set of simple and repeatable linear measurements.
Discussion: While the nasal cavity and maxillary sinus are both larger in a larger facial skeleton, there is a strong inverse relationship between them at a given facial size. Our results do not support the notion that the shape of the internal nasal cavity is more strongly associated with climate compared to the external midfacial morphology.
(© 2019 Wiley Periodicals, Inc.)
Databáze: MEDLINE
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