Electrolysis Practice Exam

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What is the pathway of blood circulation from the lungs to the heart called?

Systemic circulation
Coronary circulation
Pulmonary circulation
Hepatic circulation

The correct answer is: Pulmonary circulation

The pathway of blood circulation from the lungs to the heart is known as pulmonary circulation. This circuit is responsible for carrying deoxygenated blood from the right side of the heart to the lungs, where it picks up oxygen and releases carbon dioxide. Once the blood is oxygenated, it returns to the left side of the heart through pulmonary veins. This pathway is distinct from systemic circulation, which transports oxygenated blood from the heart to the rest of the body; coronary circulation, which supplies blood to the heart muscle itself; and hepatic circulation, which involves blood flow to and from the liver. Understanding these different circulatory pathways is fundamental to grasping how the cardiovascular system functions as a whole.