Cardiovascular System

Multiple Choice

What is the largest artery in the body?

• A. Inferior vena cava

• B. Venule

• C. Aorta

• D. Arteriole

Multiple Choice

The cardiovascular system also helps regulate body temperature by controlling where blood moves around the body.

• True

• False

Multiple Choice

Blood vessels are network of tubes that carry blood to different parts of the body.

• True

• False

Multiple Choice

The lungs pump the blood that circulates in the body.

• True

• False

Multiple Choice

The main function of the cardiovascular system is to transport substances to and from cells throughout the body.

• True

• False

Multiple Choice

Systemic circulation carries blood between the heart and lungs.

• True

• False

HyperHeart (Animated Heart)

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Multiple Choice

What is the main function of blood vessels?

• A. To produce blood cells
  

• B. To transport blood throughout the body
  

• C. To store excess blood
  

• D. To filter waste from blood

  
  

Multiple Choice

Which blood vessels carry blood away from the heart?

• A. Veins
  

• B. Arteries
  

• C. Capillaries
  

• D. Venules

  
  

Multiple Choice

How do veins prevent blood from flowing backward?

• A. Through thick walls

• B. Through valves

• C. Through muscle tissue

• D. Through constant pressure

Multiple Choice

Where does the exchange of substances between blood and cells occur?

• A. In arteries

• B. In veins

• C. In capillaries

• D. In the heart

Multiple Choice

What happens when blood vessels dilate?

• A. Blood flow decreases

• B. Blood flow increases

• C. Blood pressure rises

• D. Blood clotting occurs

Multiple Choice

How much blood does an average person have?

• A. 2-3 liters

• B. 3-4 liters

• C. 4.5-5 liters

• D. 6-7 liters

Multiple Choice

What is the liquid part of blood called?

• A. Hemoglobin

• B. Platelets

• C. Plasma

• D. Red blood cells

Multiple Choice

Which component gives blood its red color?

• A. White blood cells

• B. Plasma
  

• C. Platelets
  

• D. Hemoglobin

Multiple Choice

10. What is the primary function of white blood cells?

• A. Carrying oxygen

• B. Defending against infections

• C. Helping blood clot

• D. Regulating temperature

Multiple Choice

Which blood vessels generally carry oxygen-rich blood?

• A. Veins

• B. Venules

• C. Arteries

• D. Capillaries

Multiple Choice

What are platelets responsible for?

• A. Carrying oxygen

• B. Fighting infections

• C. Helping blood clot

• D. Regulating pH