Circulatory System in Biology Reviewer 6
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Questions and Answers

What is the primary function of the respiratory system?

  • Exchange oxygen and carbon dioxide (correct)
  • Absorb nutrients
  • Regulate body temperature
  • Produce hormones

    • Where does the exchange of gases between the external environment and the lungs primarily occur?

  • Alveoli (correct)
  • Bronchi
  • Trachea
  • Nose

    • Which process involves the transport of oxygen to body cells and collection of carbon dioxide?

  • Breathing
  • Use of oxygen
  • Internal respiration (correct)
  • External respiration

    • What is the function of the upper respiratory system?

    <p>Entry point of inhaled air</p> Signup and view all the answers

    Where does the actual exchange of gases take place in the respiratory system?

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

    What is the function of the epiglottis in the respiratory system?

    <p>Closing the trachea during swallowing</p> Signup and view all the answers

    Which structure is responsible for warming and moistening the air?

    <p>Nasal cavity</p> Signup and view all the answers

    In which animals do some breathe through their skin which needs to be kept moist for gas exchange?

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

    What is the main function of the circulatory system?

    <p>To carry oxygen to cells</p> Signup and view all the answers

    Which component of blood is responsible for defending the body from infections?

    <p>Leukocytes (WBC’s)</p> Signup and view all the answers

    What is the function of thrombocytes (platelets) in the blood?

    <p>Prevent blood loss by clogging injured blood vessels</p> Signup and view all the answers

    Which blood vessels carry deoxygenated blood away from the heart?

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

    What is the main function of the heart in the circulatory system?

    <p>To act as a pumping station</p> Signup and view all the answers

    What is the function of vena cava in the circulatory system?

    <p>Receives deoxygenated blood from all parts of the body</p> Signup and view all the answers

    Which chamber of the heart pumps oxygenated blood to the body?

    <p>Left ventricle</p> Signup and view all the answers

    What is the function of valves in the heart?

    <p>Prevent the back flow of blood</p> Signup and view all the answers

    Which vessel carries deoxygenated blood to the lungs for oxygenation?

    <p>Pulmonary artery</p> Signup and view all the answers

    What is the purpose of the septum in the heart?

    <p>Prevent blood from flowing between atria or ventricles</p> Signup and view all the answers

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