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vol.19 issue1STUDY OF THE COMPOSITION OF THE DIAGONAL ARTERY WALL IN PIG'S HEARTHISTOLOGICAL DESCRIPTION OF THE DORSAL CORTICAL BONE IN THE MIDLE DIAPHYSIS OF THE METACARPIAL III IN THE MIXED MARE author indexsubject indexarticles search
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Revista chilena de anatomía

Print version ISSN 0716-9868

Abstract

ALONSO, C. R. et al. MACRO AND MICROSCOPIC CHARACTERISTICS OF THE HEART AND GREAT VESSELS OF THE COYPU (Myocastor coypus, Molina) OF DIFFERENT AGES. Rev. chil. anat. [online]. 2001, vol.19, n.1, pp.29-37. ISSN 0716-9868.  http://dx.doi.org/10.4067/S0716-98682001000100005.

Macro and microscopic aspects of the heart and great vessels of coypu (Myocastor coypus, Molina) of different ages were studied. The anatomical characteristics of some superficial veins for potential application in venipuncture were also investigated. 44 coypu of both sexes, including adults, prepuberals, newborns and 120 day gestation fetuses were used. The heart and great vessels of 18 adults and prepuberals, and of 14 newborns, and the cephalic and lateral and medial saphenous veins of all adults and prepuberals were dissected, measured and photographed. Samples of heart and aorta of animals of all ages were fixed and processed by conventional histological methods. Sections were stained with hematoxilin-eosin, picrosirius red, Verhoeff´s iodine-iron hematoxylin and Weigert´s resorcin-fuchsin with and without oxone. The heart and great vessels were similar to those of other rodents, although some proper characteristics could be observed. The relative weight of the heart was 0.93 to 1.03 %. The cephalic and lateral saphenous veins were found appropriate for venipuncture. In adults and prepuberals, fibers of the collagenous and elastic systems were similar to those of other rodents. In fetuses, when compared with newborns, differences in amount and distribution were observed, mostly in fibers of the elastic system

Keywords : Veterinary Anatomy; Heart; Artery; Collagen; Coypu.

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