Quiz: Respiratory System Exam!

10 Questions | Total Attempts: 156

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Quiz: Respiratory System Exam!

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Questions and Answers
  • 1. 
    Which one of the following has walls one cell in thickness and is well supplied with blood?
    • A. 

      Bronchioles

    • B. 

      Bronchi

    • C. 

      Alveoli

    • D. 

      Trachea

  • 2. 
    The main function of the nasal cavity is to:
    • A. 

      Warm and filter air

    • B. 

      Act as a resonating chamber for sound

    • C. 

      Provide a surface to detect odours

    • D. 

      Supply mucus

  • 3. 
    The area of ciliated tissue in nasal cavities is increased by projections called:
    • A. 

      Septa

    • B. 

      Sinuses

    • C. 

      Villi

    • D. 

      Conchae

  • 4. 
    Which of the following allows the lungs to move freely and with reduced friction between the inner walls of the thorax?
    • A. 

      Moisture in inhaled air

    • B. 

      Mucus within the bronchioles

    • C. 

      Fluid within the pleura

    • D. 

      Pulmonary blood supply

  • 5. 
    Air enters the lungs in during inspiration because:
    • A. 

      There is a vacuum in the alveoli

    • B. 

      Air pressure outside the body is greater than in the lungs

    • C. 

      The intercostal muscles push outwards and stretch the lungs

    • D. 

      The lungs are attached to the diaphragm which is raised

  • 6. 
    During expiration, the:
    • A. 

      Diaphragm lowers

    • B. 

      Ribs move upward and outward

    • C. 

      Pressure inside the thoracic cavity increases

    • D. 

      Size of the thoracic cavity increases

  • 7. 
    Which of the following is true of gaseous exchange through the wall of the alveolus?
    • A. 

      Nett diffusion of oxygen is from alveoli to the blood capillaries

    • B. 

      Diffusion of carbon dioxide occurs at the same rate in both directions

    • C. 

      Nett diffusion of carbon dioxide is from alveoli to the blood capillaries

    • D. 

      Diffusion of oxygen occurs at the same rate in both direction

  • 8. 
    Oxygen passes from the alveoli to the blood capillaries by:
    • A. 

      Osmosis

    • B. 

      Diffusion

    • C. 

      Active transport

    • D. 

      All of these

  • 9. 
    The volume of air that moves into and out of the lungs with each breath is called:
    • A. 

      Residual volume

    • B. 

      Reserve volume

    • C. 

      Vital capacity

    • D. 

      Tidal volume

  • 10. 
    The substance to which oxygen becomes chemically bonded within the red blood cell is:
    • A. 

      Oxyhaemoglobin

    • B. 

      Haemoglobulin

    • C. 

      Haemoglobin

    • D. 

      Carboxyhaemoglobin

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