Heart Valves and Blood Flow

The video explains the journey of blood through the heart and lungs. Blood enters the right side of the heart, passes through the tricuspid valve into the right ventricle, and is pumped through the pulmonary valve into the pulmonary arteries leading to the lungs. In the lungs, carbon dioxide is exchanged for oxygen. The oxygen-rich blood returns to the left side of the heart via the pulmonary veins, enters the left atrium, passes through the bicuspid valve into the left ventricle, and is finally pushed through the aortic valve to circulate throughout the body.

What valve does blood pass through to enter the right ventricle?

• Pulmonary valve

• Aortic valve

• Tricuspid valve

• Bicuspid valve

Where does the blood go after it is pushed through the pulmonary valve?

• Aorta

• Pulmonary arteries

• Pulmonary veins

• Left atrium

What happens to the blood in the lungs?

• It gains carbon dioxide and loses oxygen

• It loses oxygen and gains carbon dioxide

• It gains oxygen and loses carbon dioxide

• It remains unchanged

Through which valve does blood enter the left ventricle?

• Aortic valve

• Bicuspid valve

• Pulmonary valve

• Tricuspid valve

What is the final valve the blood passes through before entering the body?

• Tricuspid valve

• Aortic valve

• Pulmonary valve

• Bicuspid valve