Pulmonary Circulation and Blood Flow

What is the primary purpose of the pulmonary circulation?

Which blood vessels are responsible for carrying deoxygenated blood from the heart to the lungs?

What type of blood do the pulmonary veins carry to the heart?

What happens to the blood after it delivers oxygen to the body's cells?

During which phase does the blood become oxygenated in the pulmonary circulation?

Pulmonary Circulation

The pulmonary circulation is the pathway of blood flow between the heart and lungs.
Blood travels from the heart to the lungs, picking up oxygen and releasing carbon dioxide.
Blood then returns to the heart, now oxygen-rich.
Blood vessels involved are pulmonary arteries (carrying blood away from the heart) and pulmonary veins (carrying blood to the heart).

Oxygenation and Deoxygenation

Oxygen-rich blood (oxygenated) is picked up by the lungs.
Blood becomes oxygen-poor (deoxygenated) when oxygen is delivered to body cells.
Waste products like carbon dioxide are carried away to the lungs.

Blood Flow

Blood flows from the heart to the lungs (pulmonary arteries).
Blood becomes oxygenated in the lungs (pulmonary veins).
Oxygenated blood returns to the heart, specifically the left atrium.
Blood is pumped from the heart to the rest of the body (systemic circulation).

Speed of Blood Flow

Blood travels about 1 metre per second at rest.
Blood flow slows in smaller blood vessels (capillaries).
A complete trip from the heart down to the toes and back takes about one minute.

This quiz covers the essential concepts of pulmonary circulation, including the pathways of blood flow to and from the lungs. Understand how blood transitions from oxygen-poor to oxygen-rich, and the role of various blood vessels. Test your knowledge on the speed of blood flow and the overall mechanics of circulation.