Final answer:
The path of oxygenated blood from the lungs to the body via the heart is known as Systemic circulation.
Step-by-step explanation:
The pathway of oxygenated blood returning from the lungs, being received by the left atrium and then pumped out to the body, is known as Systemic circulation. After oxygenated blood returns to the heart through the pulmonary veins, it is received by the left atrium. From there, it is transferred to the left ventricle, which then pumps it through the aorta and systemic arteries and distributes it throughout the body to deliver oxygen and nutrients to tissues before returning deoxygenated blood to the heart to restart the cycle.