Question

Find the correct order of blood circulation through heart.

• A. Right atrium $\to$ Right ventricle $\to$ Lungs $\to$ Left atrium $\to$ Left ventricle $\to$ Body
• B. Right ventricle $\to$ Right atrium $\to$ Lungs $\to$ Left atrium $\to$ Left ventricle $\to$ Body
• C. Left atrium $\to$ Left ventricle $\to$ Lungs $\to$ Right atrium $\to$ Right ventricle $\to$ Body
• D. Left ventricle $\to$ Left atrium $\to$ Lungs $\to$ Right atrium $\to$ Right ventricle $\to$ Body

Answer 1

The correct option is A Right atrium $\to$ Right ventricle $\to$ Lungs $\to$ Left atrium $\to$ Left ventricle $\to$ Body

The deoxygenated blood enters the right atrium through the vena cava. This blood passes to the right ventricle which enters the pulmonary artery to supply the blood to the lungs. The oxygenated blood enters the left atrium through the pulmonary veins. This blood passes into the left ventricle which pumps the blood into the aorta. The aorta supplies the blood to the tissues of the body.

Thus, the correct answer is option A.