Front

How many chambers does the human heart have?

Back

The human heart has 4 chambers: two atria and two ventricles.

Front

What is the function of the tricuspid valve?

Back

The tricuspid valve is located between the right atrium and the right ventricle and prevents the backward flow of blood.

Front

What does the inferior vena cava do?

Back

The inferior vena cava receives oxygen-poor blood from the lower limbs and abdominal organs and empties it into the right atrium.

Front

What are valves in the cardiovascular system?

Back

Valves are structures in the heart and large veins that prevent the backward flow of blood.

Front

Which vessels carry oxygenated blood from the lungs to the heart?

Back

The pulmonary veins carry oxygenated blood from the lungs to the heart.

Front

What is the role of the aorta?

Back

The aorta is the largest artery in the body and carries oxygenated blood from the heart to the rest of the body.

Front

What is the function of the pulmonary artery?

Back

The pulmonary artery carries oxygen-poor blood from the right ventricle to the lungs for oxygenation.

Front

What is the difference between atria and ventricles?

Back

Atria are the upper chambers of the heart that receive blood, while ventricles are the lower chambers that pump blood out of the heart.

Front

What is the role of the heart's pacemaker?

Back

The pacemaker, or sinoatrial node, regulates the heartbeat by sending electrical signals that trigger heart contractions.

Front

What is systemic circulation?

Back

Systemic circulation is the pathway in which oxygenated blood is distributed from the heart to the body and returns as deoxygenated blood.