摘要
目的 探讨人左右心耳胶原纤维和弹性纤维的分布规律。方法 用石蜡切片 ,VanGison和Weight染色 ,光镜观察 10例成人左右心耳纤维网络构筑。 结果 心外膜的胶原纤维分为浅胶原层、亮层、深胶原层和网状层 ,其走向包括上下、左右、斜行和垂直 4种走向。心耳上缘的胶原比近冠状沟侧的少。心肌间的胶原纤维束分粗细两种 ,前者与心肌长轴一致 ,后者连于粗纤维束之间 ,缠绕心肌表面。心内膜的胶原纤维 1～ 4层不等 ,与心肌和心外膜的胶原纤维相互连续 ,使心耳各层连成一复杂的胶原网络。弹性纤维广泛地分布于心耳各层之间 ,与胶原纤维相互交织。结论 心外膜的纤维组合有利于防止心壁扩张和回弹 ;心肌的胶原网络可防止心肌在舒缩过程中细胞过渡拉长、滑脱或错位。
Objectives In order to investigate the distribution pattern of collagenous fibers and elastic fibers in human right and left auriculae. Methods Useing technique of paraffin section,Van Gieson and Weight stainings , 10 adults' right and left auriculae were observed under the microscope.Results The collagenous fibers in pericardium consisted of superficial collagen layer,light layer, deep collagen layer and reticular layer, and it runs in fuor ways including up-down orientation,left-right orientation,obligue orientation and vertical orientation. The collagen in the upper edge of auricl was less than that of near the coronary sulcus.There are two kinds of colagenous fiber bundles in the cardiac muscle: the thick ones and the thin ones.The former goes in the same direction as the cardiac muscle does. The later connected with the thick bundles and twined round the surface of the cardiac muscle .The layer of collagenous fibers in endocardium varied from 1 to 4 layer. The collagenous fibers in endocardium joined each orther with those in cardiac muscle and in perecardium, and made the auricular collagen fibers into a complex collagen net. The elastic fibers distributed widely among the auricular layers,and interweave with collagenous fibers. Conclusion Architecture of fibers net in epicardium farvor keeping the cardiac cells from extending excessively,olisthing and malposition in the process of myocardic systolicity and diastolicity. Elestic fibers cooperated with collagen can enhance strongly the recoiling force of cardiac muscle.
出处
《新乡医学院学报》
CAS
2000年第1期1-4,共4页
Journal of Xinxiang Medical University
基金
河南省教育委员会资助课题 !(No.96310018)
关键词
胶原纤维
弹性纤维
组织学
人心耳
collagenous fiber
elastic fiber
histology
human auricle
