Circulatory System Functions and Structures

What is the primary function of the vena cavae (SVC and IVC) in the circulatory system?

• To pump oxygenated blood to the body.

• To carry deoxygenated blood from the body back to the heart.

• To transport blood from the heart to the lungs.

• To regulate heart rate and rhythm.

In the circulatory system, how are arteries and veins generally distinguished by the direction of blood flow?

• Arteries carry blood towards the heart, while veins carry blood away from it.

• Arteries carry oxygenated blood, while veins carry deoxygenated blood.

• Arteries carry blood away from the heart, while veins carry blood towards it.

• Arteries are always larger in diameter than veins.

After returning from the body via the vena cavae, which chamber of the heart does blood first enter?

• Left Atrium

• Right Ventricle

• Right Atrium

• Left Ventricle

Which valve controls the flow of blood from the right atrium to the right ventricle?

• Mitral valve

• Aortic valve

• Tricuspid valve

• Pulmonary valve

What is the primary function of the right ventricle in the heart's blood flow?

• To pump oxygenated blood to the body.

• To receive oxygenated blood from the lungs.

• To pump deoxygenated blood to the lungs for oxygenation.

• To distribute blood to the upper body.

What vessel transports deoxygenated blood from the right ventricle to the lungs?

• Aorta

• Pulmonary Vein

• Superior Vena Cava

• Pulmonary Artery

After blood is oxygenated in the lungs, which chamber of the heart does it enter next?

• Right Atrium

• Left Atrium

• Right Ventricle

• Superior Vena Cava

What is the main role of the left ventricle in the circulatory system?

• To pump deoxygenated blood to the lungs.

• To receive deoxygenated blood from the body.

• To pump oxygen-rich blood to the rest of the body.

• To regulate blood pressure in the pulmonary circuit.