Circulatory System Quiz

What are the main components of the circulatory system?

• Heart, brain, and blood

• Heart, lungs, and liver

• Lungs, blood, and kidneys

• Heart, blood, and blood vessels

Where is the heart located in the human body?

• Between the lungs, slightly to the left

• Below the rib cage, on the right

• Between the lungs, slightly to the right

• Above the stomach, in the center

What is the primary function of red blood cells?

• To carry nutrients

• To regulate body temperature

• To transport oxygen and carbon dioxide

• To fight infections

What is the role of white blood cells in the circulatory system?

• To regulate body temperature

• To carry nutrients

• To transport oxygen

• To fight infections

Which blood vessel carries oxygen-rich blood from the heart to the body?

• Veins

• Capillaries

• Arteries

• Lymphatic vessels

What is the function of valves in veins?

• To connect arteries and veins

• To prevent blood from flowing backward

• To increase blood pressure

• To filter blood

What is the largest artery in the human body?

• Carotid artery

• Pulmonary artery

• Aorta

• Femoral artery

Which type of blood vessel is the thinnest?

• Venules

• Capillaries

• Veins

• Arteries

What is one recommended way to maintain a healthy heart?

• Avoid all physical activity

• Exercise for at least 30 minutes daily

• Eat more fried foods

• Consume more sugary drinks

Why is it important to avoid stress for heart health?

• Stress increases blood sugar levels

• Stress can lead to unhealthy eating habits

• Stress can negatively impact heart function

• Stress reduces oxygen in the blood