Question

Which of the following statement(s) is (are) true about human heart?

1. Right atrium receives oxygenated blood from lungs through pulmonary artery.
2. Left atrium transfers oxygenated blood to left ventricle which sends it to various parts of the body.
3. Right atrium receives deoxygenated blood through vena cava from upper and lower body.
4. Left atrium transfers oxygenated blood to aorta which sends it to different parts of the body.

Options

• a

• b and c

• a and d

• b and d

Answer 1

b and c

Explanation:

1. False – Right atrium gets deoxygenated blood from the body, not from lungs. Pulmonary artery carries blood from heart to lungs.

2. True – Left atrium sends oxygenated blood to the left ventricle, which pumps it to the whole body.

3. True – Right atrium receives deoxygenated blood from the upper and lower body through the vena cava.

4. False – Left atrium does not transfer blood to the aorta directly. It first goes to the left ventricle, which then pumps it into the aorta.