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目的了解右心房内条索的形态特点及分布规律，为心脏临床提供解剖学资料。方法２２例成人尸体心脏，切开右心房，肉眼观察房腔内各种条索的形态和分布，并用米尺对部分条索进行测量。结果界嵴长４．４１ｃｍ，宽０．４８ｃｍ，梳状肌起点９．５５条，止点８．３６条。起止之间相互交织。梳状肌有部分呈游离条索。提出了门索的概念。门索远侧为丛状条索，近侧为界嵴和梳状肌。结论右心房的条索分为纵向、横向和丛状三类。门索可能具有提缩房腔和防止心房过度扩张的作用，手术应予保护。
Objective To understand the morphological characteristics and distribution of the cords in the right atrium and provide anatomic data for cardiac surgery. Methods Twenty-two adult cadaver hearts were dissected and the right atrium was dissected. The morphology and distribution of various cords in the atrium were observed with the naked eye, and some of the cords were measured with a metric foot. Result ridge sector length 4.41cm, width 0.48cm, combs starting 9.55, ending 8.36. Intertwined between start and stop. Some comb muscles showed a free cane. Mentioned the concept of door. Means distal cords for the cords, proximal crista and comb muscles. Conclusion The right atrial cords are divided into vertical, horizontal and plexiform three categories. Mending may have to enhance the cavity and prevent excessive atrial expansion, the operation should be protected.