Quiz  /  NEET MCQ on Human Respiratory System

  • 1. 
    Which of the following is correct for the partial pressure of oxygen in alveoli?

  • less than carbon dioxide
  • less than the blood
  • more than the blood
  • equal to that of the blood

  • 2. 
    Which of the following is a chronic respiratory disorder caused by smoking?

  • Asthma
  • Emphysema
  • Respiratory alkalosis
  • Respiratory acidosis

  • 3. 
    Most of the carbon dioxide produced in the tissues is transported to the lungs as

  • carbonates
  • bicarbonates
  • dissolved in the blood
  • attached to haemoglobin

  • 4. 
    The gaseous exchange in alveoli is a type of

  • simple diffusion
  • osmosis
  • active transport
  • passive transport

  • 5. 
    The linings that separate air contained in lungs from venous blood

  • squamous epithelium and tunica media
  • squamous epithelium and endothelium
  • transitional epithelium and tunica externa
  • none of the above

  • 6. 
    Which of the following organs only receives oxygenated blood?

  • Lungs
  • Gills
  • Liver
  • Spleen

  • 7. 
    Which of the following parts of the brain regulates the respiratory process?

  • The vagus nerve
  • Cerebral peduncle
  • Medulla oblongata
  • Cerebellum

  • 8. 
    Which of the following membranes encloses lungs?

  • Pleural membrane
  • Pericardium
  • Perichondrium
  • Periosteum

  • 9. 
    RBCs present in the blood of a person residing at higher altitudes

  • decrease in size
  • increase in size
  • decrease in the number
  • increase in the number

  • 10. 
    The alveolar epithelium of lungs is

  • ciliated squamous
  • nonciliated squamous
  • nonciliated columnar
  • ciliated columnar
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