bulbus cordis造句

• They develop on the atrioventricular canal and conotruncal region of the bulbus cordis.
• The bulbus cordis forms part of the ventricles.
• The tubular heart quickly differentiates into the truncus arteriosus, bulbus cordis, primitive ventricle, primitive atrium, and the sinus venosus.
• The swelling is known as the bulbus cordis and the upper part of this swelling develops into the truncus arteriosus The structure is ultimately mesodermal in origin.
• From the inflow to the outflow, it consists of sinus venosus, primitive atrium, the primitive ventricle, the bulbus cordis, and truncus arteriosus.
• By the upgrowth of the ventricular septum the bulbus cordis is in great measure separated from the left ventricle, but remains an integral part of the right ventricle, of which it forms the infundibulum.
• The developing tubular heart then folds ventrally and bulges in five regions along its length : the first one and closest to the arterial end is the truncus arteriosus, then follow the bulbus cordis, the primitive ventricle, the primitive atrium and the sinus venosus.
• After this happens, cells which have migrated from the neural crest begin to divide the bulbus cordis, the main outflow tract is divided in two by the growth a spiraling septum, becoming the great vessels the ascending segment of the aorta and the pulmonary trunk.
• The adjacent walls of the bulbus cordis and ventricle approximate, fuse, and finally disappear, and the bulbus cordis now communicates freely with the right ventricle, while the junction of the bulbus with the truncus arteriosus is brought directly ventral to and applied to the atrial canal.
• The adjacent walls of the bulbus cordis and ventricle approximate, fuse, and finally disappear, and the bulbus cordis now communicates freely with the right ventricle, while the junction of the bulbus with the truncus arteriosus is brought directly ventral to and applied to the atrial canal.