Anatomical Description of the Intrinsic Musculature and Cavity of the Larynx in Four Primate Species

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Nicolle Villarroel-Villarroel & Oliver Quintana-García


Primates are currently classified as "Strepsirrhini" and "Haplorrhini". The strepsirrhines inhabit mainly Madagascar and Southeast Asia. However, the Haplorrhini are subdivided into "old world monkeys" and "new world monkeys", the first being distributed in Africa and Asia mainly, while the main distribution areas for the latter are in Central and South America. They are frequent animals in zoos and rehabilitation centers, allowing abundant studies regarding their distribution, habitat, behavior and conservation measures, but few studies are related to their anatomy. For this reason, the aim of our study was to perform an anatomical description of the intrinsic muscles and cavity of the larynx in four specimens of primates, which were donated by the Metropolitan Park of Santiago, Chile, corresponding to species: spider monkey (Ateles fusciceps), capuchin monkey (Cebus albifrons), white-handed gibbon (Hylobates lar) and ring-tailed lemur (Lemur catta). The dissection was performed from superficial to deep in each isolated larynx, describing and comparing the observed anatomical findings, using as a comparative guide the human anatomical literature. The study showed anatomical differences between the primates under study, as well as differences for what is described in the literature for the anatomy of the human larynx.

KEY WORDS: Anatomía; Laringe; Primates.

How to cite this article

VILLARROEL-VILLARROEL, N. & QUINTANA-GARCÍA, O. Anatomical description of the intrinsic musculature and cavity of the larynx in four primate species. Int. J. Morphol., 36(4):1326- 1330, 2018.