Cardiovascular System Quiz

What is the main organ of the cardiovascular system?

• Heart

• Lungs

• Liver

• Brain

What is the main function of the cardiovascular system?

• Produce hormones

• Filter waste products

• Digest food

• Deliver oxygen to cells

What happens when your body temperature is increasing?

• Blood vessels constrict

• Blood vessels dilate

• Heart rate decreases

• Oxygen levels decrease

What is the role of hormones in the cardiovascular system?

• Facilitate communication between organs

• Regulate body temperature

• Transport nutrients

• Control heart rate

Where does blood enter the heart?

• Left ventricle

• Right atrium

• Left atrium

• Right ventricle

How does blood entering the right side of the heart differ from blood entering the left side of the heart?

• Left side has more carbon dioxide

• Right side has more oxygen

• Left side has more oxygen

• Right side has more carbon dioxide

Why is it important for the heart to have one-way valves?

• To regulate blood pressure

• To filter impurities from the blood

• To prevent blood from flowing backwards

• To control the heart rate

What are coronary arteries and how are they involved in heart disease?

• Veins that carry deoxygenated blood away from the heart; blockage can lead to heart disease

• Arteries that carry oxygenated blood to the heart muscle; blockage can lead to heart disease

• Arteries that carry deoxygenated blood away from the heart; blockage can lead to heart disease

• Veins that carry oxygenated blood to the heart muscle; blockage can lead to heart disease