Other questions in this quiz

2. gaseous exchange in insects takes place between...

  • both
  • tracheal fluid and the air
  • tracheols and the air

3. an extra beat or early beat of the ventricles

  • ectopic heartbeat
  • fibrillation

4. right ventricle ----->

  • pulmonary artery
  • aorta

5. why does fetal haemoglobin need a higher affinity for oxygen

  • it needs to associate with oxygen in areas where oxygen tension is low enough for mother's haemoglobin to dissociate
  • it needs more oxygen

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