Final answer:
The bulbus cordis in the embryonic heart tube develops into the right ventricle, which is an essential part of the heart responsible for pumping blood to the lungs.
Step-by-step explanation:
The final destination of the bulbus cordis is to develop into the right ventricle of the heart. During cardiac development, the human heart starts as a primitive heart tube that forms from the cardiogenic area in the mesoderm layer of the embryo. The heart tube consists of several regions including the truncus arteriosus, bulbus cordis, primitive ventricle, primitive atrium, and the sinus venosus. The bulbus cordis gives rise to the right ventricle, which is a critical component of the circulatory system, pumping deoxygenated blood to the lungs. Over time, the embryonic heart undergoes a series of complex transformations, involving the formation of chambers and separation by internal septa, to become the fully functional adult heart.