Circulatory System

What is the main organ of the circulatory system?

• Lungs

• Heart

• Capillaries

• Veins

Which type of circulation sends blood from the lungs and back?

• Pulmonary circulation

• Systemic circulation

• Arterial circulation

• Venous circulation

Where are oxygen and nutrients picked up by the blood?

• Arteries

• Veins

• Capillaries

• Alveoli

Which blood vessel carries oxygenated blood to all parts of the body except the lungs?

• Aorta

• Superior Vena Cava

• Inferior Vena Cava

• Pulmonary Artery

What is the main function of capillaries?

• Deliver oxygen and nutrients to cells

• Carry carbon dioxide and waste to the lungs

• Return blood from the body to the heart

• Pump blood through a network of arteries

Which valves control blood flow from the atria to the ventricles?

• Mitral and tricuspid valve

• Aortic and pulmonary valve

• Superior and Inferior Vena Cava

• Capillaries and Alveoli

What is the role of veins in the circulatory system?

• Carry oxygenated blood from the lungs to the body's tissues

• Carry carbon dioxide and waste towards the heart.

• Exchange of nutrients, oxygen, and waste products with tissues

• Pump blood through the body

What type of circulation sends blood from the heart to the body and back?

• Pulmonary circulation

• Systemic circulation

• Arterial circulation

• Venous circulation

What is the function of the vena cava in the circulatory system?

• It carries oxygenated blood from the left ventricle to the body

• It carries deoxygenated blood from the body to the right atrium

• It carries oxygenated blood from the lungs to the left atrium

• It carries deoxygenated blood from the right ventricle to the lungs

What is the function of the heart in the circulatory system?

• To pump oxygenated blood to the body's tissues

• To carry deoxygenated blood from the body's tissues to the lungs

• To exchange nutrients, oxygen, and waste products with tissues

• To return blood from the body to the lungs