EVERYDAY SCIENCE

Detailed explanation-1: -Both the superior vena cava and inferior vena cava empty blood into the right atrium. Blood flows through the tricuspid valve into the right ventricle. It then flows through the pulmonic valve into the pulmonary artery before being delivered to the lungs.

Detailed explanation-2: -Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body’s tissues through the aorta.

Detailed explanation-3: -The path in which it follows from the heart to the lungs includes the vena cava to the right atrium, then flows to the right ventricle via the tricuspid valve to the pulmonary trunk, then the pulmonary artery and capillaries that deposit it to the lungs.