界沟
The results show that the sinoatrial node is located in the right atrial wall, posterior to the upper half of terminal sulcus, and occupies all the thickness of the wall between epicardium and endocardium.
结果表明:SAN主要位于右心房界沟上半部后方的心房壁内,几乎占据心房壁厚度的全部,介于心内、外膜之间。
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