BMS1032 respiratory example Q's

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1. the dorsal respiratory group...

  • is responsible for fine tuning expiration
  • controls forces exhalation
  • controls the contraction of the accessory muscles of ventilation
  • controls the contraction of the diaphragm and external intercostals
  • is responsible for fine tuning inspiration
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2. an increase in the level of co2 in the blood will....

  • stimulate the ventral respiratory group
  • decrease the firing of central chemoreceptors
  • increase o2 diffusion at the lungs
  • increase pulmonary ventilation
  • decrease gaseous exchange at the lungs

3. the partial pressure of oxygen in the cells of peripheral tisses is approx.

  • 45mmHg
  • 40mmHg
  • 70mmHg
  • 50mmHg
  • 100mmHg

4. in quiet breathing....

  • inspiration and expiration are both passive processess
  • inspiration and expiration involve muscular contractions
  • none of the above
  • inspiration involves muscular contractions and expiration is passive
  • inspiration is passive and expiration involves muscular contraction

5. most of the co2 in the blood is transported as:

  • bicarbonate ions in the cytoplasm of RBC
  • carbonic acid
  • as bicabonate ions in the plasma
  • carbaminohaemoglobin
  • solute dissolved in the plasma

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