[Topography and parameters of the intertrabecular spaces of the heart ventricles in man and laboratory animals].
The heart of the man, dog, cat and rabbit have been investigated using biometry and corrosive methods. In the horizontal sections the volume of the intertrabecular spaces (IS) of the ventricles has been estimated and the "coefficient of the myocardial sponginess" has been calculated as the ratio of the cavities volume to the myocardial volume. In the corrosive casts of the ventricular cavities the deviation angles of the IS casts from the axial line along the afferent and deferent tracts have been measured. Differences in manifestation of the IS in the hearts of the mammals studied have been revealed. The IS are best pronounced in the human heart, less in the dog heart and still less in the cat and rabbit hearts. For all the hearts studied predominance of the volume of the IS in the right ventricle is specific. The deviation angle of the IS casts from the axial line along the afferent tract increases from the cardiac basis towards its apex, while the deviation angle of the IS along the deferent tract decreases from the apex towards the basis. The functional predisposition of the IS is supposed to consist in providing systolic reserves of the cardiac ventricular cavities. The results of the mathematical analysis of the changes in the cast deviation angles of the IS along the afferent and deferent tracts demonstrate their role in twisting and acceleration of the blood stream in the systolic phase and slowing down of the blood stream in the diastolic phase.
Fomin
A M
AM
Gabain
L I
LI
D000818:Animals; D002415:Cats; D003343:Corrosion; D003971:Diastole; D004285:Dogs; D006321:Heart / Q000033:anatomy & histology* / Q000502:physiology; D006352:Heart Ventricles / Q000033:anatomy & histology; D006652:Histological Techniques; D006801:Humans; D011817:Rabbits; D013045:Species Specificity; D013599:Systole; D016276:Ventricular Function
Topografiia i parametry mezhtrabekuliarnykh prostranstv zheludochkov serdtsa cheloveka i nekotorykh laboratornykh zhivotnykh.