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6. What does the conducting zone consist of?

  • The primary bronchi and the larynx.
  • The primary bronchi, the larynx, the terminal bronchioles.
  • The terminal bronchioles
  • The larynx

7. Forced expiratory volume tests are used to differentiate between restrictive and obstructive lung disorders

  • True
  • False

8. What is the definition of inspiratory reserve volume?

  • The amount of extra air exhaled during a forceful breath out.
  • The amount of extra air inhaled during a deep breath.
  • This is the vital lung capacity plus the residual volume and is the total amount of air lungs can hold.
  • The amount of air left in the lungs following a maximal exhalation.

9. What is the role of intrapleural pressure?

  • Negative intrapleural pressure acts a suction, so the outer part of the lung lobe tissue is stuck to the back of ribs and connective tissue and diaphragm moves down, lung tissue goes with it
  • None of the above.
  • To regulate breathing
  • To increase movement of thorax

10. Fibrosis will......... compliance making it harder to inflate the lungs.

  • Make no difference.
  • Decrease
  • Increase
  • None of these are correct.

11. What is quiet inspiration?

  • Active process that requires muscle action where thorax volume increases and lungs expand
  • Passive process with no muscle action
  • Process in which alveoli gas exchange occurs.
  • None of the above

12. What pressure change occurs during quiet inspiration?

  • Intrapleural pressure
  • Alveolar pressure decreases below atmospheric pressure and air moves into alveoli
  • Intrapulmonary pressure
  • None of the above

13. Which muscles control expiration?

  • Internal intercostals, external oblique and rectus abdominus
  • All of the above.
  • Diaphragm, external intercostals
  • Pharynx, larynx

14. Histamine will..........bronchioles-->........ resistance--> .......airflow.

  • constrict, increase, decrease
  • None of these are correct.
  • dilate, decrease, increase
  • constrict, increase, decrease

15. Cessation of breathing is known as...

  • Eupnea
  • Pneumothorax.
  • Apnea.
  • Dyspnea.

16. The partial pressure of oxygen decreases at high altitude because the amount of oxygen in the air is decreased.

  • False
  • True

17. Carbon monoxide is lethal because it..

  • Increases oxygen unloading at the cells.
  • Binds haemoglobin preventing oxygen binding.
  • Increase CO2 and causes seizures.
  • Reduces CO2 and slows breathing.

18. What is the primary bronchi?

  • The terminal bronchioles
  • Trachea
  • Layrnx
  • The respiratory bronchioles

19. Is inspiration at rest an active or passive process?

  • Active
  • Passive

20. What is pulmonary ventilation?

  • air moves into lungs when pressure inside lungs is less than atmospheric pressure, air moves out of lungs when pressure inside lungs is greater than atmospheric pressure
  • all of the above
  • the pressure exerted by the gases that make up the air that surrounds the earth
  • change in the pressure gradient