Declination of the pars basilaris in normal and in artificially deformed skulls / by Bruno Oetteking.

  • Oetteking, Bruno, 1871-
Date:
1924
Catalogue details

Licence: In copyright

Credit: Declination of the pars basilaris in normal and in artificially deformed skulls / by Bruno Oetteking. Source: Wellcome Collection.

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    NORMAL AND IN ARTIFICIALLY DEFORMED SKULLS1 A STUDY BASED ON SKULLS OF THE CHUMASH OF SAN MIGUEL ISLAND, CALIFORNIA, AND ON THOSE OF THE CHINOOK By Bruno Oetteking 1. Introduction HE declination of the pars basilaris of the human occipitale is the result of the phylogenetically important flexion of the cranial base in the sagittal sense, which in turn is caused by the enormously expanding brain and the acquirement of the erect posture. The mechanical changes during this process quite probably take place in such a way that the transverse axis of flexion must be laid into the spheno- basdar fissure, while other processes, like the displace¬ ment of the foramen magnum downward and forward, go hand in hand with it. Instead of following up the full effects of these changes the declination of the pars basilaris alone and its relation to other measurable morphological conditions at the base of the skull are to be the subject of a special investi- n Us original (German) form this investigation represents a contribution to the Anniversary Volume for Prof. Pud. Martin of Munich, presented to him by his colleagues and pupils on the occasion of his sixtieth birthday, July 1, 1924. 3