Quiz  /  Respiratory System Class 12 MCQ Questions With Answers

  • 1. 
    When you breathe, your lungs take in ___ and remove ___.

  • air/oxygen
  • oxygen/carbon dioxide
  • carbon dioxide/waste
  • waste/air

  • 2. 
    The opening between vocal cords

  • glottis
  • epiglottis

  • 3. 
    Given the following structures:1. larynx2. nasal cavity3. pharynx4. tracheaWhich of the following is the correct order that air would flow during inhalation.

  • 1,2,3,4
  • 2,3,1,4
  • 2,1,3,4
  • 4,2,3,1

  • 4. 
    The only externally visible part of the respiratory system

  • Eyes
  • Nose
  • Pharynx
  • Larynx

  • 5. 
    The drawing in of breath; inhalation.

  • Inspiration
  • Expiration

  • 6. 
    A cavity within a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities.

  • Sinus
  • Nose
  • Pharynx
  • Larynx

  • 7. 
    Flap of tissue that covers the opening to the windpipe during swallowing

  • Pharynx
  • Trachea
  • Epiglottis

  • 8. 
    Which lung has 2 lobes?

  • Right
  • Left

  • 9. 
    What is the site of gas exchange?

  • alveoli
  • nose
  • lung
  • bronchi

  • 10. 
    Which part of the Respiratory System plays a major role in speech?

  • nose
  • pharynx
  • larynx
  • trachea

  • 11. 
    Pulmonary ventilation is...

  • Gas exchange between lungs and alveoli
  • Movement of air in and out of lungs
  • Gas exchange between alveolar and tissue
  • All of above

  • 12. 
    These apply to inhalation

  • Creates larger pressure in thoracic cavity
  • Diaphragm contracts
  • Ribs move out
  • All of above

  • 13. 
    Men's voice are typically deeper because... (select all that apply)

  • They're longer
  • They're thicker
  • They're shorter
  • Both A & B

  • 14. 
    The larynx is apart of the upper respiratory system

  • True
  • False

  • 15. 
    The upper respiratory system is composed of these divisions:

  • Nasal cavity
  • Pharynx
  • Bronchioles
  • Both A & B

  • 16. 
    Density is calculated by...

  • volume/ mass
  • 1/mass
  • mass/volume
  • All of above

  • 17. 
    What does the hard and soft palate divide?

  • larynx from glottis
  • epiglottis from trachea
  • pharynx from larynx
  • oral cavity from pharynx

  • 18. 
    These apply to exhilation

  • Diaphragm relaxes
  • Pressure is less outside the body
  • Diaphragm moves down
  • Both A & B

  • 19. 
    Alveoli expand because they are...

  • coated with mucus
  • coated with surfactant
  • contain carbon dioxide
  • contain oxygen

  • 20. 
    Made up of spongy, elastic tissue that stretches as you breathe

  • Alveoli
  • Lungs
  • Nasal Cavity
  • Pharynx

  • 21. 
    When alveoli in the lungs enlarge and cant push oxygen to the blood

  • Bronchitis
  • Lung cancer
  • Asthma
  • Emphysema

  • 22. 
    Bronchial tubes contract quickly causing shortness of breath, coughing, and wheezing

  • Bronchitis
  • Emphysema
  • Lung cancer
  • Asthma

  • 23. 
    Part of the throat that contains the tonsils

  • Trachea
  • Pharynx
  • Larynx
  • Bronchi

  • 24. 
    Passage way that moistens the air and has hairs to trap dust and particles

  • Nasal cavity
  • Bronchi
  • Mouth cavity
  • Larynx

  • 25. 
    What is the function of the respiratory system

  • Take in O2 only
  • Remove CO2 only
  • Take in O2 ad remove CO2
  • Make sugar

  • 26. 
    Muscular structure that helps to expand and contract the lungs, forcing air in and out

  • Pharynx
  • Nasal cavity
  • Alveoli
  • Diaphragm

  • 27. 
    This is a tube-like pasage used for food, liquid, and air

  • Larynx
  • Trachea
  • Pharynx
  • Lungs

  • 28. 
    Laryngitis is the inflammation of

  • Oropharynx
  • Pharynx
  • Glottis
  • Larynx
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