What is the correct sequence of blood flow through the body?

The correct sequence of blood flow through the body begins in the right atrium, where deoxygenated blood returns from the body. From the right atrium, blood flows into the right ventricle, which then pumps it to the lungs via the pulmonary arteries for oxygenation in the alveoli. After the blood is oxygenated in the lungs, it returns to the heart, entering the left atrium. The blood then moves into the left ventricle, which pumps oxygenated blood out to the body through the aorta.

Understanding this sequence is critical in the context of human anatomy and physiology, particularly in relation to how the circulatory system functions to ensure that oxygen is delivered to tissues. This sequence highlights the path that blood takes to become oxygenated and how it circulates back to the heart to be pumped out to the body.

The other sequences presented do not accurately represent the flow of blood through the cardiovascular system, which is crucial for maintaining proper physiological function and understanding how various conditions can affect circulation.