Human Circulatory System
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Questions and Answers

What is the main function of arteries?

  • To bring oxygen-poor blood back to the heart
  • To bring oxygen-rich blood to the body's cells and tissues (correct)
  • To pump blood throughout the body
  • To exchange oxygen and nutrients with the tissue cells

    • What is a characteristic of arteries?

  • They have thinner walls
  • They carry deoxygenated blood
  • They have high pressure inside them (correct)
  • They have valves inside them

    • What type of blood do arteries carry?

  • Carbon dioxide-rich blood
  • Oxygen-rich blood (correct)
  • Oxygen-poor blood
  • Nutrient-rich blood

    • What is the relationship between arteries and veins?

    <p>Arteries bring oxygen-rich blood, while veins bring oxygen-poor blood</p> Signup and view all the answers

    Why don't arteries need valves?

    <p>Because the force of the blood coming from the heart ensures a one-way direction</p> Signup and view all the answers

    What is the main difference between arteries and veins in terms of pressure?

    <p>Arteries have higher pressure, while veins have lower pressure</p> Signup and view all the answers

    What is the primary function of arteries in the circulatory system?

    <p>To transport blood away from the heart</p> Signup and view all the answers

    What is unique about the walls of arteries?

    <p>They have strong, muscular walls</p> Signup and view all the answers

    What is the name of the large artery that leaves the heart?

    <p>Aorta</p> Signup and view all the answers

    What is the relationship between arteries and arterioles?

    <p>Arterioles are branches of arteries</p> Signup and view all the answers

    What is the direction of blood flow in arteries?

    <p>Away from the heart</p> Signup and view all the answers

    What is the purpose of the three layers in the walls of arteries?

    <p>To handle high blood pressure</p> Signup and view all the answers

    At the base of the heart, which chambers can be found?

    <p>Both the atria and ventricles</p> Signup and view all the answers

    What is the main difference between the left and right ventricles?

    <p>The left ventricle is thicker-walled</p> Signup and view all the answers

    What is the purpose of the atrioventricular valves (AV valves)?

    <p>To open and close between the upper and lower heart chambers</p> Signup and view all the answers

    Which of the following is NOT a part of the heart's internal structure?

    <p>Aorta</p> Signup and view all the answers

    What is the function of the chordae tendineae?

    <p>To attach to the edges of the atrioventricular valves</p> Signup and view all the answers

    What is the interventricular septum?

    <p>A wall that separates the left and right ventricles</p> Signup and view all the answers

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