Topics: The Vascular System and Blood Flow Quiz
What is the role of the thoracic pump in the return of blood to the heart?
A. Creating a difference in pressure between the veins in the chest and abdominal cavities
B. Pushing or massaging blood back to the heart with each muscle contraction
C. Regulating blood clotting
D. Assisting in the distribution of blood to different organs
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What is the main role of arteries in the cardiovascular system?
A. Returning blood to the heart
B. Exchanging gases and nutrients with the tissues
C. Regulating blood distribution to the various tissues
D. Carrying oxygenated blood away from the heart