【摘要】 <正> 窦房结和房室结是心传导系的重要部分,对滋养这两个结的窦房结动脉和房室结动脉的解剖知识,不论基础医学工作者或临床医生都比较重视。早在1907年,Keith和Flack发现窦房结时,即开始描述了窦房结动脉。这支血管除营养窦房结外,还分布至上腔静脉口附近,故Gross又称其为上腔静脉口支(r.ostii cavaesuperioris)。由于它首经Keith和Flack描述,也称为Keith-Flack动脉。James认为窦房结动脉名称比较适宜,简短清楚、含意明确,故目前常应用此名。房室结动脉又称纤维中隔支更多还原

【Abstract】 A Study of one hundred hearts (adults 56, children 44) has been made. The S-A mode arteries and A-V node arteries are measured and analysed. The chief results are as fo11ows: (1) 67% of S-A node arteries originated from the right coronary artery; 33% arose from the left coronary artery. A number of the S-A node arteries arising from the right coronary artery were the continuation from the anterior right atrial branch. Occasionally, they may be come from the intermediate right atrial branch or intermediate left atrial branch. (2) The distance between the right S-A node artery origin and the aortic root was about 1.28±0.12 cm in adults, and 0.85±0.09 cm in children, while between the left S-A node artery origin and the bifurcation of the left coronary artery, it was about 0.84±0.19 cm in adults and 0.41±0.03 cm in children. The external diameters of the S-A node arteries were measured. The mean value was as follows: 0.17±0.01 cm (adults); 0.12±0.01 cm (children). (3) The relation between the origins of S-A node artery and A-V node artery may be divided into six types. ①The S-A node artery and A-V node artery which originated from the right coronary artery were about 58.06%. ②The S-A node artery arising from the left coronary artery and the A-V node artery originating from the right coronary artery occurred in 30.11% ③The S-A node artery originated from the right coronary attery, while the A-V node artery arose from the left. This condition was about 6.45%.④The type that the S-A node artery arose from both coronary arteries, and the A-V node artery originated from the right was about 3.22%.⑤Both the S-A node artery and A-V node artery arising from left coronary artery occurred in 1.08%.⑥The A-V node artery originating from the left and right coronary arteries, and the S-A node artery arising from the right coronary artery were about 1.08%.更多还原