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To reach the left side of heart the bloo...

To reach the left side of heart the blood must pass through `:-`

A

Sinus venosus

B

Kidneys

C

Liver

D

Lungs

Text Solution

AI Generated Solution

The correct Answer is:
To determine the pathway that blood must take to reach the left side of the heart, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Blood Circulation**: Blood circulation consists of two main circuits: systemic and pulmonary. Deoxygenated blood returns to the heart from the body and is sent to the lungs for oxygenation. 2. **Deoxygenated Blood Returns to the Heart**: Deoxygenated blood from the body returns to the heart through the superior and inferior vena cava, entering the right atrium (auricle). 3. **Blood Moves to the Right Ventricle**: From the right atrium, the blood flows into the right ventricle. This is the chamber responsible for pumping the deoxygenated blood to the lungs. 4. **Pumping to the Lungs**: The right ventricle pumps the deoxygenated blood through the pulmonary arteries to the lungs. Here, the blood picks up oxygen and releases carbon dioxide. 5. **Oxygenated Blood Returns to the Heart**: After oxygenation in the lungs, the blood returns to the heart through the pulmonary veins, entering the left atrium. 6. **Moving to the Left Ventricle**: From the left atrium, the oxygenated blood flows into the left ventricle, which is the chamber that pumps oxygenated blood to the rest of the body through the aorta. 7. **Conclusion**: Therefore, to reach the left side of the heart, the blood must pass through the lungs. ### Final Answer: The blood must pass through the **lungs** to reach the left side of the heart. ---
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