Consider the following statements regarding the human circulatory system: 1. Deoxygenated blood from the upper parts of the body is brought to the right atrium through the superior vena cava. 2. The pulmonary veins carry oxygenated blood from the lungs back to the left atrium of the heart. Which of the statements given above is/are correct?

💡 Solution & Explanation

Human circulation is a double circulatory system comprising systemic and pulmonary circuits. The superior vena cava collects deoxygenated blood from the head, neck, and upper limbs, emptying into the right atrium, while pulmonary veins return freshly oxygenated blood from both lungs directly into the left atrium. Valves within the heart chambers prevent the backflow of blood during contraction cycles.