Circulatory System

10 Questions | Total Attempts: 356

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Circulatory System Quizzes & Trivia

Easy quiz on the circulatory system for students


Questions and Answers
  • 1. 
    Which statement is true about transport in plants?
    • A. 

      Water is transported by the xylem in upward and downward directions.

    • B. 

      Sugars manufactured in the leaves are transported through the phloem by tension cohesion mechanism.

    • C. 

      Sugars always move from source to sink, in an upward direction.

    • D. 

      Sugars always move from sink to source, in a downward direction.

    • E. 

      Sugars are transported from source to sink, in any direction.

  • 2. 
    Which of the following is the primary pacemaker of the heart?
    • A. 

      Sinoatrial node

    • B. 

      Atriventricular node

    • C. 

      Bundle of His

    • D. 

      Purkinje fibers

    • E. 

      Ventricular node

  • 3. 
    What type of muscle lines the blood vessels?
    • A. 

      Skeletal muscle

    • B. 

      Striated muscle

    • C. 

      Cardiac muscle

    • D. 

      Smooth muscle

    • E. 

      Ligaments

  • 4. 
    Which of the following has an open circulatory system?
    • A. 

      Earthworm

    • B. 

      Grasshopper

    • C. 

      Cow

    • D. 

      Man

    • E. 

      Fish

  • 5. 
    Which structure is not a component of the circulatory system?
    • A. 

      Heart

    • B. 

      Lung

    • C. 

      Blood

    • D. 

      Artery

    • E. 

      Capillaries

  • 6. 
    In the systemic circuit, blood returns to the heart via
    • A. 

      Lymph vessels

    • B. 

      Arteries

    • C. 

      Capillaries

    • D. 

      Veins

    • E. 

      Arterioles

  • 7. 
    Which of the following carries oxygenated blood?
    • A. 

      Pulmonary artery

    • B. 

      Aorta

    • C. 

      Vein

    • D. 

      Venules

    • E. 

      Vena cavae

  • 8. 
    Which chamber of the heart has the thickest wall, since it pumps oxygenated blood to the systemic circuit?
    • A. 

      Right atrium

    • B. 

      Right ventricle

    • C. 

      Left atrium

    • D. 

      Left ventricle

  • 9. 
    To which of these structures will blood immediately flow from the vena cava?
    • A. 

      Aorta

    • B. 

      Right atrium

    • C. 

      Right ventricle

    • D. 

      Capillaries

    • E. 

      Left atrium

  • 10. 
    Which of the following is NOT correct about capillaries?
    • A. 

      Capillaries are the smallest blood vessels.

    • B. 

      Gas exchange occurs via capillaries.

    • C. 

      Exchange of nutrients occurs in capillaries.

    • D. 

      Capillaries are covered by several layers of epithelial tissue.

    • E. 

      None of the above