Digital reconstruction (computed tomography) of two skulls of the sample.Credit: Stanislava Eisová and Emiliano Bruner
Posted on 06/21/2022 10:01:30 PM PDT by SunkenCiv
...the journal The Anatomical Record has published a study coordinated by Emiliano Bruner, who leads the Paleoneurology Group at the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), that analyzes the distribution of certain craniovascular traits in four native populations from the late Holocene in the southernmost regions of South America.
The sample includes 70 skulls, dated to between 200 and 3,000 years old, from populations of four regions in Argentina: the pampas (Buenos Aires), southern Andes (Salta), central Patagonia (Chubut), and southern Patagonia (Tierra del Fuego). The four groups do not present substantial differences although, as has been observed in other craniology studies, the inhabitants of Tierra de Fuego have a more distinctive anatomy.
The results of this analysis show that the size and artificial deformation of the skull have a minor or null influence on these vascular traits. However, the American skulls do show differences from the European ones, and have more highly developed posterior vascular networks.
These vessels are responsible for managing the flow of blood within the skull cavity, by regulating part of what passes in and out. "It remains to be seen whether the differences described are due to casual factors of the American population, or specific influences of the environment," says Bruner.
In the latter case, these could be physiological influences, due to individual metabolic responses, or genetic ones associated to environmental adaptations. Altitude or climate could be important factors in this case, if we consider that these arteries and veins could be implicated in the thermal regulation of the skull cavity and the brain.
This work was led by Stanislava Eisová of the National Museum of Prague (Czech Republic), and also availed of the collaboration of the Konrad Lorenz Institute for Evolution and Cognition Research (Austria).
(Excerpt) Read more at phys.org ...
Digital reconstruction (computed tomography) of two skulls of the sample.Credit: Stanislava Eisová and Emiliano Bruner
Thanks, SunkenCiv!
Only if you dispute the existence of races, and claim that it is an artificial construct.
What a surprise, that the skull of a woman from Tierra del Fuego - the inhabitants of that region were, in the past, frequently cited as being among the technologically most primitive on the planet - displays significant differences to the skull of my pure-blooded Danish grandmother!
Regards,
Yes, we miss the late Holocene. He was an inspiration to us all. I told him NOT to take the jab and now we can see what it did to his internal vascular system of the skull. Don't be the next Holocene.
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