分为浅深两层。浅层肌为左右两房共有，沿心房的横径环形包绕，部分纤维伸入房中隔形成“8”字形纤维袢。深层肌为各房固有，分别包绕各房。其肌束的排列呈袢状和环状，袢状纤维起自纤维环，纵绕心房后又止于纤维环上；环状纤维呈环行包绕于心耳和静脉口的周围。
...小鼠;心室肌;心房肌;血管内皮生长因子 [gap=1945]Key wordsNFDEA exercise load;mice; ventricular myocardium;atria myocardium;vascular endothelial cell growth factor ..
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心房肌细胞 atrial myocytes ; Cardiac atrium myocytes ; atrial cell
心房肌纤维性损害 atrial myofibrous damage
心房肌组织 atria muscle tissue
人心房肌细胞 human atrial myocyte
心房肌动作电位的幅度 action potential amplitude ; APA
心房肌的电重构 atrial electrical re modeling
豚鼠心房肌 Guinea pig atria
心房肌电生理 Atrial electrophysiological changes
心房心肌梗死 auricular myocardial infarction ; myocardial infarction of atrium
Rats were killed after 2 hours and the cerebral cortex, lung tissue and right atria were obtained.
造模2小时后将大鼠快速断颈取大脑皮质、肺组织及右心房肌组织。
参考来源 - 大鼠油酸型ARDS肺、心、脑的形态学改变及机理探讨·2,447,543篇论文数据，部分数据来源于NoteExpress
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