Cardiomyocytes in the sinoatrial node This image shows a section of the sinoatrial node, a pacemaking area of the right atrium of the heart.

窦房结的心肌细胞：这张图显示了窦房结的切面，右心房的一块起搏区。

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Objective: The morphological bases of retrograde coronary sinus perfusion (RCSP) and retrograde right atrium perfusion (RRAP) were studied with pig heart model.

目的：研究以猪心为动物模型经冠状窦逆行灌注和右心房逆行灌注的形态基础。

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Via the atrium daylight flows abundantly into the heart of the building.

日光通过中庭流入大楼的心脏。

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