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本文采用冠状动脉造影、注射墨汁火棉胶切片法,观察了人心、狗心和兔心左室乳头肌形态和动脉分布的特点。乳头肌的形态,根据其附着心壁的程度分为:1.附着型,人心占34%;狗心占100%;兔心占38%。2.游离型,人心占28%;兔心占10%。3.中间型,人心占38%;兔心占52%。乳头肌动脉的主要来源:前外组乳头肌在人心及狗心多数由前降支发出的分支供应;兔心主要由左室支的左室前支供应。后内组乳头肌在人心、狗心主要由右或左冠状动脉的左室后支供应;兔心主要来自左室支的左室后支。乳头肌动脉的分布类型与乳头肌形态的关系:1.游离型乳头肌,主要为中央动脉型,占87.5%。2.附着型乳头肌,主要为节段动脉型,占94.29%。3.中间型乳头肌,主要为混合动脉型,占98.59%。本文测量了乳头肌血管的口径和密度,还讨论了乳头肌动脉的来源、分支分布类型在人、狗、兔的不同特点,以及对乳头肌梗塞的应用意义。
In this paper, coronary angiography, injection of ink collodione gel slice method, the human heart, dog heart and rabbit heart left ventricular papillary muscle morphology and arterial distribution characteristics. Papillary muscle shape, according to the extent of its attachment to the wall is divided into: 1. Attached type, the human heart accounted for 34%; dog heart accounted for 100%; rabbit heart accounted for 38%. 2. Free-type, the human heart accounted for 28%; rabbit heart accounted for 10%. 3. Intermediate, the human heart accounted for 38%; rabbit heart accounted for 52%. The main source of papillary muscles: anterolateral group of papillary muscles in the heart and dog heart most branches from the branch of the anterior descending artery supply; rabbit heart mainly by the left ventricular branch of the left anterior branch supply. Posterior group of papillary muscles in the human heart, dog heart mainly by the left or right coronary artery left ventricular supply; rabbit heart mainly from the left ventricular branch of the left ventricular posterior branch. The distribution of papillary artery type and papillary muscle morphology: 1. Free papillary muscle, mainly for the central artery type, accounting for 87.5%. 2. Adhesive papillary muscle, mainly for segmental arterial type, accounting for 94.29%. 3. Intermediate papillary muscle, mainly mixed type, accounting for 98.59%. This article measured caliber and density of papillary muscles, but also discussed the source of papillary muscles, the type of branch distribution in humans, dogs, rabbits, different characteristics, and the significance of the application of papillary muscle infarction.