Circulatory System Quiz

What is the main function of the circulatory system?

• A. To deliver oxygen to the body's cells
• B. To remove waste products from the body
• C. To transport nutrients to the body's tissues
• D. All of the above

Which organ is the central pump of the circulatory system?

• A. Lungs
• B. Liver
• C. Heart
• D. Kidneys

What are the four chambers of the heart?

• A. Atria and ventricles
• B. Arteries and veins
• C. Lungs and kidneys
• D. Capillaries and vessels

Which blood vessels carry oxygen-rich blood away from the heart?

• A. Arteries
• B. Veins
• C. Capillaries
• D. Lungs

What is the role of the lungs in the circulatory system?

• A. To pump blood throughout the body
• B. To carry oxygen to the cells
• C. To remove waste products from the blood
• D. All of the above

Which valve is located between the right atrium and ventricle?

• A. Tricuspid valve
• B. Mitral valve
• C. Pulmonary valve
• D. Aortic valve

What happens to blood in the lungs?

• A. It becomes oxygenated
• B. It becomes deoxygenated
• C. It is pumped to the body
• D. It is filtered by the kidneys

Why is proper circulation important for the body?

• A. It helps fight diseases
• B. It heals wounds
• C. It maintains a stable body temperature
• D. All of the above

What can help maintain a healthy circulatory system?

• A. Regular exercise
• B. Balanced diet
• C. Avoiding smoking
• D. All of the above

Which of the following is NOT a function of the circulatory system?

• A. Carrying oxygen to cells
• B. Removing waste products
• C. Regulating body temperature
• D. Digesting food