Functional analyses of the primate upper cervical vertebral column

Journal of Human Evolution
Thierra K Nalley, Neysa Grider-Potter

Abstract

Recent work has highlighted functional correlations between direct measures of head and neck posture and primate cervical bony morphology. Primates with more horizontal necks exhibit middle and lower cervical vertebral features that indicate increased mechanical advantage for deep nuchal musculature and mechanisms for column curvature formation and maintenance. How features of the C1 and C2 reflect quantified measures of posture have yet to be examined. This study incorporates bony morphology from the upper cervical levels from 20 extant primate species in order to investigate further how posture correlates with cervical vertebrae morphology. Results from phylogenetic generalized least-squares analyses indicate that few vertebral features exhibit a significant relationship with posture when accounting for differences in size. When size-adjusted traits were correlated with posture, vertebral variation had a stronger relationship with neck posture than head posture variables. Two C1 traits-relative posterior arch length and superior facet curvature-were correlated with neck posture variables. Relative posterior arch length exhibits a positive relationship with neck posture, while superior articular facet curvature demonstrates a ...Continue Reading

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Citations

Feb 16, 2018·American Journal of Physical Anthropology·Mikel ArlegiAsier Gómez-Olivencia
Nov 9, 2018·American Journal of Physical Anthropology·Liza J Shapiro, Addison D Kemp
Mar 19, 2020·American Journal of Physical Anthropology·Neysa Grider-PotterYoshihiko Nakano
Mar 18, 2020·Scientific Reports·Amélie BeaudetDominic Stratford
May 16, 2019·Nature Ecology & Evolution·Scott A WilliamsMilena R Shattuck
Aug 7, 2019·Evolution; International Journal of Organic Evolution·Abby Vander LindenSharlene E Santana
May 22, 2021·Journal of Human Evolution·Hyunwoo JungNoreen von Cramon-Taubadel

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