Final answer:
The right lower chamber, known as the right ventricle, sends oxygen-poor blood to the lungs via the pulmonary artery, which is part of the pulmonary circulation system.
Step-by-step explanation:
The right lower chamber distributes oxygen-poor blood to the lungs through the pulmonary artery. This process is a crucial component of the pulmonary circulation, which functions to carry oxygen-depleted blood away from the heart to the lungs. Here, the red blood cells dispatch carbon dioxide and acquire oxygen. The circulatory system is bifurcated into pulmonary and systemic circuits. The right ventricle pumps the deoxygenated blood received from the right atrium through the pulmonary artery, directing it towards the lungs. Once oxygenated in the pulmonary capillaries, blood returns to the left atrium via pulmonary veins, completing the circuit. It's essential to distinguish between the roles of either side of the heart: the left side is responsible for pumping oxygen-rich blood throughout the body in the systemic circuit, whereas the right side focuses on sending oxygen-poor blood to the lungs within the pulmonary circuit.