10
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Anatomic Description of the Ulna of the White-Footed Tamarin (Saguinus leucopus Günther, 1876) Translated title: Descripción Anatómica de la Ulna del Tití Gris (Saguinus leucopus Günther, 1876)

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          This document is a description of the macroscopic functional anatomy of the ulna bony prominences in the White-footed Tamarin (Saguinus leucopus), a neotropical endemic, and monotypic primate of Colombia. Few studies have been conducted on its anatomy, and thus its ulnar morphology, an essential element for this animal's quadrupedal arboreal locomotion, remains unknown. This study is based on eight specimens, fixed in formalin at 10 % whose ulnas were extracted in order to describe the main bony prominences along with muscular and ligamentous fixation functions. These elements of the locomotor apparatus and the multiple anatomical contours of the ulna of the White-footed Tamarin, exhibit characteristics for positional and articular adjustment with other bones of the forelimb in harmony with the attachments of the muscles, essential for quadrupedal arboreal locomotion.

          Translated abstract

          El presente trabajo es una descripción de la anatomía macroscópica y funcional de los relieves óseos de la ulna del tití gris (Saguinus leucopus), un primate neotropical, endémico y monotípico de Colombia, con escasos estudios sobre su anatomía, y por ende de la morfología ulnar, elemento fundamental para la locomoción cuadrúpeda de este animal arbóreo que permanece desconocida. Para ello, se tomaron como base del estudio ocho especímenes fijados con formalina al 10 % y de ellos se extrajeron sus ulnas, describiendo los principales relieves óseos con sus funciones de fijación muscular y ligamentosa. Estos elementos del aparato locomotor con sus múltiples relieves anatómicos de la ulna del tití gris, presentan características para la adaptación posicional y articular con otros huesos del miembro torácico de manera armónica para la fijación de músculos indispensables en su locomoción cuadrúpeda arbórea.

          Related collections

          Most cited references25

          • Record: found
          • Abstract: not found
          • Book: not found

          Gray's anatomy the anatomical basis of clinical practice

            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Evolution and homologies of primate and modern human hand and forearm muscles, with notes on thumb movements and tool use.

            In this paper, we explore how the results of a primate-wide higher-level phylogenetic analysis of muscle characters can improve our understanding of the evolution and homologies of the forearm and hand muscles of modern humans. Contrary to what is often suggested in the literature, none of the forearm and hand muscle structures usually present in modern humans are autapomorphic. All are found in one or more extant non-human primate taxa. What is unique is the particular combination of muscles. However, more muscles go to the thumb in modern humans than in almost all other primates, reinforcing the hypothesis that focal thumb movements probably played an important role in human evolution. What makes the modern human thumb myology special within the primate clade is not so much its intrinsic musculature but two extrinsic muscles, extensor pollicis brevis and flexor pollicis longus, that are otherwise only found in hylobatids. It is likely that these two forearm muscles play different functional roles in hylobatids and modern humans. In the former, the thumb is separated from elongated digits by a deep cleft and there is no pulp-to-pulp opposition, whereas modern humans exhibit powerful thumb flexion and greater manipulative abilities, such as those involved in the manufacture and use of tools. The functional and evolutionary significance of a third peculiar structure, the intrinsic hand structure that is often called the 'interosseous volaris primus of Henle' (and which we suggest is referred to as the musculus adductor pollicis accessorius) is still obscure. The presence of distinct contrahentes digitorum and intermetacarpales in adult chimpanzees is likely the result of prolonged or delayed development of the hand musculature of these apes. In relation to these structures, extant chimpanzees are more neotenic than modern humans. Copyright © 2012 Elsevier Ltd. All rights reserved.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Functional anatomy of the gibbon forelimb: adaptations to a brachiating lifestyle.

              It has been shown that gibbons are able to brachiate with very low mechanical costs. The conversion of muscle activity into smooth, purposeful movement of the limb depends on the morphometry of muscles and their mechanical action on the skeleton. Despite the gibbon's reputation for excellence in brachiation, little information is available regarding either its gross musculoskeletal anatomy or its more detailed muscle-tendon architecture. We provide quantitative anatomical data on the muscle-tendon architecture (muscle mass, physiological cross-sectional area, fascicle length and tendon length) of the forelimb of four gibbon species, collected by detailed dissections of unfixed cadavers. Data are compared between different gibbon species and with similar published data of non-brachiating primates such as macaques, chimpanzees and humans. No quantitative differences are found between the studied gibbon species. Both their forelimb anatomy and muscle dimensions are comparable when normalized to the same body mass. Gibbons have shoulder flexors, extensors, rotator muscles and elbow flexors with a high power or work-generating capacity and their wrist flexors have a high force-generating capacity. Compared with other primates, the elbow flexors of gibbons are particularly powerful, suggesting that these muscles are particularly important for a brachiating lifestyle. Based on this anatomical study, the shoulder flexors, extensors, rotator muscles, elbow flexors and wrist flexors are expected to contribute the most to brachiation.
                Bookmark

                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                ijmorphol
                International Journal of Morphology
                Int. J. Morphol.
                Sociedad Chilena de Anatomía (Temuco, , Chile )
                0717-9502
                December 2016
                : 34
                : 4
                : 1392-1395
                Affiliations
                [03] Manizales orgnameUniversidad Autónoma de Manizales orgdiv1Departamento de Ciencias Básicas Biológicas Colombia
                [01] Ibagué orgnameUniversidad del Tolima orgdiv1Facultad de Medicina Veterinaria y Zootecnia orgdiv2Departamento de Sanidad Animal Colombia
                [04] Manizales orgnameCORPOCALDAS Colombia
                [02] Manizales orgnameUniversidad de Caldas / CORPOCALDAS orgdiv1Departamento de Ciencias Básicas para la Salud Colombia
                Article
                S0717-95022016000400035
                10.4067/S0717-95022016000400035
                75aedb6f-87a4-4dab-b678-b92855e9647b

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 17 October 2015
                : 10 August 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 25, Pages: 4
                Product

                SciELO Chile


                Anatomía,Inserciones,Osteología,Primate,Anatomy,Attachments,Osteology

                Comments

                Comment on this article

                scite_
                0
                0
                0
                0
                Smart Citations
                0
                0
                0
                0
                Citing PublicationsSupportingMentioningContrasting
                View Citations

                See how this article has been cited at scite.ai

                scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.

                Similar content231

                Cited by1

                Most referenced authors245