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Anatomy of the coronary arteries of Sichuan golden monkey (Rhinopithecus r. roxellanae)


, : Anatomy of the coronary arteries of Sichuan golden monkey (Rhinopithecus r. roxellanae). Acta Zoologica Sinica 47(3): 333-337

In order to investigate the blood supply features and coronary artery's branch characteristic of Rhinopithecus r. roxellanae heart, we observed the branches and distribution of the coronary arteries of Rhinopithecus r. roxellanae by arterial vascular casting and tissue transparance method. The results showed that the nutrition of Rhinopithecus r. roxellanae heart was supplied by left and right coronary artery. The left coronary artery of Rhinopithecus r. roxellanae divided into anterior descending branch and circumflex branch. Anterior descending branch gives off left fringe branch and interventricular septum branch in proper order. Left fringe branch is frequently the main branch of the anterior descending branch and gives off branches to lateral and posterior wall of the left ventricle. The interventricular septum is supplied by a large septal branch that originates from the anterior descending branch of the left coronary artery. The main trunk of the anterior descending branch distributes over anterior wall of the left ventricle. Circumplex branch of left coronary artery gives off branches to left atrium and lateral and diaphragm wall of the left ventricle. The right coronary artery of Rhinopithecus r. roxellanae gives out arterial cone branch, anterior branch and posterior branch of right ventricle, and right fringe branch. Anterior interventricular branch is an extension of arterial cone branch and gives off branches to part of anterior wall of the left and right ventricle and cardiac apex et al. Anterior branch of right ventricle gives off branches to part of anterior wall of the right ventricle. Right fringe branch gives off branches to below fringe wall of right ventricle. Posterior branch of right ventricle distributes over the upper of diaphragm wall of right ventricle. Posterior interventricular branch is an extension of right coronary artery and branches to part of diaphragm wall of left and right ventricle and posterior 1/3 interventricular septum. The distribution type of left and right coronary arteries on the diaphragmatic surface of Rhinopithecus r. roxellanae heart is the balance circulation type.

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