Isomura G
Department of Anatomy, Fujita Health University College, Aichi, Japan.
J Anat. 1993 Dec;183 ( Pt 3)(Pt 3):537-43.
The blood supply to the cranial venae cavae on both sides and to the heart was studied macroscopically in 40 adult laboratory shrews (Suncus murinus) of both sexes injected either with Neoprene latex into the abdominal aorta (25 animals) or with Mercox into the left ventricle (15 animals). The 1st branch of the left subclavian artery in 23 animals of the 1st group ramified caudal to the aortic arch and descended between the aorta and the trachea to supply mainly the large left cranial vena cava that lay on the dorsal surface of the left atrium, while a branch that arose between the 1st and 2nd intercostal arteries on the right in 25 animals supplied the right cranial vena cava caudally after giving rise to a branch to the oesophagus. In 2 animals the artery to the left vena cava arose directly from the thoracic aorta at the level of the 4th intercostal artery and then followed the course described above. From these considerations, these vessels in the laboratory shrew would correspond to the accessory coronary arteries of Halpern (1957) in the rat. In the 15 animals of the 2nd group, the left coronary artery was distributed to the atrium and the ventricle on left side and to the upper half of the interventricular septum, the artery on the right supplied the atrium and the ventricle on right side, the interatrial septum and lower half of the interventricular septum.
对40只成年实验性家鼩（臭鼩）进行了大体研究，观察两侧颅腔静脉和心脏的血液供应情况。这些家鼩雌雄皆有，其中25只通过向腹主动脉注射氯丁橡胶乳胶，15只通过向左心室注射甲基丙烯酸甲酯。在第一组的23只动物中，左锁骨下动脉的第一分支在主动脉弓尾部分支，并在主动脉和气管之间下行，主要供应位于左心房背侧的大的左颅腔静脉，而在第二组的25只动物中，右侧第一和第二肋间动脉之间发出的一个分支在发出一个食管分支后，向右侧颅腔静脉尾端供血。在2只动物中，左腔静脉动脉直接从胸主动脉第四肋间动脉水平发出，然后沿上述路径走行。基于这些观察，实验性家鼩中的这些血管相当于大鼠中Halpern（1957）所描述的副冠状动脉。在第二组的15只动物中，左冠状动脉分布于左侧的心房和心室以及室间隔的上半部分，右侧的动脉供应右侧的心房和心室、房间隔和室间隔的下半部分。
