Condition of the secretory apparatus of the atrial cardiomyocytes in different regions of the atrium of the rats.

Морфологія

关键词: cardiomyocyte;    myocardium;    rat heart;    secretory apparatus;   

DOI  :  

来源: DOAJ

【 摘 要 】

The purpose of work - definite of the basic morphological attributes of the secretory apparatus of the atrial cardiomyocytes with a quantitative analysis of a condition of the specialized secretory cells in different regions of the atrium of the rats. The ultrastructural and histochemical methods were used in research for studying the right and left atriums, right and left auricles of hearts, and also interatrial septa of 28 hearts of rats. It has been shown formation secretory granules and their moving from an internal cellular sites to a subsarcolemal zone was realized discretely, the certain portions in groups of 10-25 granules in everyone. Degranulation contents of granules occurs not only in a zone, which lying to a cellular membrane, but also in deep regions of sarcoplasma of cardiomyocytes. The atrium myocardium consists of two subpopulations (types) contractive cells which differ under morphological characteristics. The highest secretory activity characterizes the myocardium of the right auri-cle; the numerical density of specific granules in the left auricle and a free wall of the right auricle was been smaller on average in 1,5 times than in the right auricle; the density of granules in the myocardium of the left atrium and interatrium septa was been smaller in 4 times than in the right auricle.

【 授权许可】

Unknown