…The left coronary artery has an internal diameter of 5–8 mm and branches 1–2 cm from the aortic root to form the left anterior interventricular and left circumflex arteries, which then branch to distribute along the anterior and lateral sides of the left ventricle to the apex. The right coronary artery runs from front to back along the border between the right atrium and right ventricle, giving off branches into the right ventricle and right atrium, then drains into the posterior interventricular artery, which distributes along the posterior surfaces of the right atrium, right ventricle, and left ventricle. Many small arteries branch off from these arterial branches that run along the surface of the heart, some of which run vertically through the ventricular wall into the lumen and branch into small branches near the intima. … *Some of the terminology that refers to the "right coronary artery" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…左冠状動脈は内径5~8mmで,大動脈起始部から出て1~2cmのところで分枝して左前室間枝と左回旋枝となり,さらに枝分れして左心室の前面および側面を心尖部まで分布する。右冠状動脈は右心房と右心室の境を前から後ろへ走り,右心室および右心房へ枝を出してから後室間枝に注ぎ,右心房,右心室および左心室の後面に分布する。心臓の表面を走るこれらの動脈枝からは,多数の細い動脈が枝分れし,その一部は心室壁を内腔に向かって垂直に貫いて走り,内膜の近くで細かく分枝する。… ※「右冠状動脈」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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