The correct Answer is A-3, B-2, C-4, D-1
Explanation
The human heart is a four-chambered muscular organ responsible for pumping blood throughout the body. The chambers are the right atrium, right ventricle, left atrium, and left ventricle. Each chamber performs a specific function in the circulatory system, involving the reception and pumping of oxygenated and deoxygenated blood.
Statement-wise Analysis
- A. Left atrium: This chamber receives oxygenated blood from the lungs via the pulmonary veins. Therefore, it matches with function 3.
- B. Left ventricle: This chamber pumps oxygenated blood into the aorta, which then distributes it to the rest of the body. Therefore, it matches with function 2.
- C. Right atrium: This chamber receives deoxygenated blood from the body via the superior and inferior vena cava. Therefore, it matches with function 4.
- D. Right ventricle: This chamber pumps deoxygenated blood into the pulmonary artery, which carries it to the lungs for oxygenation. Therefore, it matches with function 1.
Key Takeaway
The left side of the heart handles oxygenated blood, with the left atrium receiving it from the lungs and the left ventricle pumping it to the body; the right side handles deoxygenated blood, with the right atrium receiving it from the body and the right ventricle pumping it to the lungs.