An study on spatial orienfation of ventricular myocardial band / 中华胸心血管外科杂志

ABSTRACT

Objective By dissected and decomposed the boiled rabbits' hearts to study the space courser of ventricular myocardial band of the normal heart architecture. Methods 10 rabbit hearts were boiled and dissected as described by Torrent-Guasp. All myocardial bands were decomposed and tagged, then recovered to the state when they hadn't been dissected, and then X-ray photos were taken. Results The myocardial band twists on itself extends from the origin of the pulmonary artery to the root of the aorta. This defines two turns in a helical fashion and delimitates two cavities, the right and left ventricles. The reciprocal fiber angle within descending and ascending segments of the apical loop was about 90?. The interventricular septum is formed by three muscular strata right segment, descending segment and ascending segment. Conclusion Our study shows that the reciprocal fiber angle within descending and ascending segments of the apical loop is about 90? and the interventricular septum is formed by three muscular strata.