Circulatory System Quiz

What is the main function of the circulatory system?

• To digest food

• To transport nutrients and oxygen

• To control body temperature

• To produce hormones

Which blood vessel carries oxygenated blood from the heart to the rest of the body?

• Pulmonary artery

• Aorta

• Vena cava

• Pulmonary vein

What is the role of the pulmonary artery in the circulatory system?

• Carries oxygenated blood to the body

• Carries deoxygenated blood to the lungs

• Carries oxygenated blood to the heart

• Carries deoxygenated blood to the heart

What are the main components of the circulatory system?

• Heart, blood, and blood vessels

• Lungs, heart, and veins

• Brain, blood, and arteries

• Stomach, heart, and capillaries

What is the primary function of blood in the body?

• To transport oxygen, nutrients, and hormones

• To produce energy

• To digest food

• To store fat

How much blood does a healthy adult typically have?

• 3-4 Liters

• 5-6 Liters

• 7-8 Liters

• 9-10 Liters

What is the size of the heart compared to?

• A basketball

• A fist

• A football

• A tennis ball

How many times does the heart beat per minute on average for an adult?

• 50-60 times

• 60-70 times

• 70-80 times

• 80-90 times

What is the role of blood vessels in the circulatory system?

• To store blood

• To act as a road-like system for blood to travel through

• To produce blood cells

• To filter blood

What is the primary function of arteries in the circulatory system?

• Carry blood to the heart

• Carry blood away from the heart

• Regulate blood pressure

• Store oxygen