Final answer:
The prefix that means 'ventricle of the heart' is 'ventriculo-'. The right and left ventricles are the two lower chambers of the heart that pump blood into the arteries, while the atria are the upper chambers that receive blood and pump it to the ventricles.
Step-by-step explanation:
The prefix that means ventricle of the heart is ventriculo-. A ventricle is a large chamber of the heart that pumps blood into arteries. The two lower chambers of the human heart are the right and left ventricles. The atrium (plural: atria), on the other hand, refers to either of the two upper chambers of the heart that receive blood from the veins and pump it into the ventricles below it.
When discussing the cardiac cycle and the sounds of the heart, the first heart sound is typically associated with ventricular systole, which is the phase during which the ventricles contract and pump blood into the arteries. The atrioventricular valves (tricuspid and mitral valves) close at the beginning of this phase, contributing to the first heart sound.
In terms of primitive heart structures, the pulmonary trunk and aorta are derived from the bulbus cordis, while the right ventricle is developed from the truncus arteriosus.