Question

Left auricle recieves pure blood from the :

• A. Pulmonary veins
• B. Pulmonary artery
• C. Superior vena cava
• D. Inferior vana cava

Answer 1

The correct option is A Pulmonary veins

Blood enters the heart through the inferior and superior vena cava, emptying deoxygented blood from the body into the right atrium.

As the atrium contracts, blood flows via the tricuspid valve into the right ventricle. As the ventricle contracts, blood leaves the heart into the pulmonary artery and to the lungs where it is oxygenated.

Two pulmonary veins from each lung carry oxygenated blood back to the left atrium.

As the atrium contracts, blood flows from the left atrium into the left ventricle. As the ventricle contracts, blood leaves the heart through the aorta to different body parts.

So, the answer is A.