Final answer:
The statement is false because the right ventricle pumps blood to the lungs via the pulmonary artery, not into the right atrium. The right atrium receives deoxygenated blood from the body through the venae cavae and the coronary sinus.
Step-by-step explanation:
The statement "Drain the right ventricle and open directly into the right atrium" is False. In the human circulatory system, the right ventricle does not drain directly into the right atrium. Instead, the right ventricle pumps blood into the pulmonary artery, which leads to the lungs for oxygenation. The anterior cardiac veins drain the anterior surface of the right ventricle and bypass the coronary sinus to empty directly into the right atrium.
The right atrium is the chamber that receives deoxygenated blood returning to the heart from systemic circulation through the superior and inferior venae cavae and the coronary sinus. Most of the systemic venous blood flow, except most coronary venous blood that flows into the coronary sinus, enters the right atrium either through the superior vena cava, draining regions superior to the diaphragm, or through the inferior vena cava, draining regions inferior to the diaphragm.