摘要
用光镜和组化法研究了兔心房室束及其束支的形态学(20例)和胆碱酯酶活性(10例)。房室束长3.60mm,其中穿通部0.58mm,穿通前部3.02mm;多为三角形,扁圆形等。房室束的起始部由过渡细胞和起搏细胞组成,前部及其束支的细胞为长形,大小有异。右束支为条索状;左束支起始部较短,分支成片状。房室束的穿通部有很大差异,5例较典型,2例位于右侧心内膜和中心纤维体之间,其余不典型。房室束及其束支胆碱酯酶为强阳性,心肌为弱阳性。
The morphology and cholinesterase activity of atrioventricular(A-V)bundle and its branches were studied in the rabbit with microscope and histo-chemistry.The length of A-V bundle was 3.60 mmand 0.58 mm of it was penetrating part,3.02 mmwas the rest.The distal A-V bundle was located atthe right or left or middle of interventricular septalcrest,and its shape was round or cllipse.The posteriorpart of A-V bundle was composed of transitional andpacemaker cells,and the cells of the anterior andbranches were extremely variable in size.The right bun-dle branches were narrow and unbranched structure.The left bundle branches origin was very short andfanned out at left septal surface.The relation of A-Vbundle to central fiber body was very variabl.The 5of 20 hearts were typical,2 passed through betweenright endocardium and central fiber body.Thecholinesterase reaction of the entire bundle branchessystem was high positive,but ventricular negative.
出处
《西安医科大学学报》
CSCD
1989年第4期289-292,共4页
Journal of Xi'an Medical University(Chinese)
关键词
房室束
中心纤维体
形态学
兔
Strioventricular bundle
Central fiber body
Cholinesterase
Rabbit
