Question

Which is the circulatory pathway of blood in the human heart?

• A. Right auricle$\to$ left auricle $\to$ Lungs$\to$Right ventricle $\to$ Left ventricle
• B. Right auricle$\to$ Right ventricle $\to$ Lungs$\to$ left auricle $\to$ Left ventricle
• C. Lungs$\to$ left auricle $\to$ left ventricle$\to$Right auricle $\to$ Right ventricle
• D. Left auricle$\to$ left ventricle $\to$ Lungs$\to$Right auricle $\to$ Right ventricle

Answer 1

The correct option is B Right auricle$\to$ Right ventricle $\to$ Lungs$\to$ left auricle $\to$ Left ventricle

Blood enters the heart through large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium ( auricle ) of the heart. Blood enters right ventricle via bicuspid valve. As the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated. After getting oxygenated, blood enters left atrium ( auricle ) through pulmonary vein.

So, the correct option is 'Right auricle→ Right ventricle → Lungs→ left auricle → Left ventricle'.