Pathway of Blood Through the Heart

The video tutorial explains the pathway of blood through the human heart, starting with deoxygenated blood from a toe traveling through the inferior vena cava to the right atrium, then to the right ventricle, and through the pulmonary artery to the lungs for oxygenation. The oxygenated blood returns via the pulmonary vein to the left atrium, moves to the left ventricle, and is pumped out through the aorta, completing the circulatory loop.

Where does the journey of deoxygenated blood begin in the video?

• In the aorta

• In a human toe

• In the left atrium

• In the lungs

Which valve does blood pass through after the right atrium?

• Mitral valve

• Aortic valve

• Tricuspid valve

• Pulmonary valve

What is the function of the pulmonary artery in the blood pathway?

• To carry oxygenated blood to the body

• To carry deoxygenated blood to the lungs

• To carry blood from the lungs to the heart

• To carry blood from the heart to the toe

After picking up oxygen in the lungs, through which vessel does blood return to the heart?

• Pulmonary vein

• Pulmonary artery

• Inferior vena cava

• Aorta

Which valve does blood pass through before entering the aorta?

• Mitral valve

• Aortic valve

• Tricuspid valve

• Pulmonary valve