Q:

Carbon dioxide

safaTerkawi
Save to bookmark
|
2022-08-08
|
  102 
0

 Carbon dioxide.

  1. Is carried as carboxyhaemoglobin on the haemoglobin molecule.
  2. Uptake by the blood increases its oxygen-binding power.
  3. Uptake by the blood leads to similar increases in H and HCO3 ion concentrations.
  4. Stimulates ventilation when breathed at a concentration of 20 per cent.
  5. Content is greater than oxygen content in arterial blood.
Medicine, textbook solutions, MCQ Questions, Medicine textbook-solutions, Medicine MCQ-questions,
login and add your own answer to this question

All Answers

safaTerkawi
2022-08-08
need an explanation for this answer? contact us directly to get an explanation for this answer

A. False It is carried as carbaminohaemoglobin; carboxyhaemoglobin is the combination of haemoglobin with carbon monoxide.

B. False It decreases as the oxygen dissociation curve is shifted to the right.

C. False HCO3 ions increase more; H ions are largely buffered by haemoglobin.

D. False Breathing 20 per cent CO2 causes respiratory depression; stimulation of respiration by CO2 is maximal when breathed at concentrations of around 5 per cent.

E. True CO2 content in arterial blood is about 500 ml/l; O2 content is about 200 ml/l.

need an explanation for this answer? contact us directly to get an explanation for this answer

total answers (1)

Similar questions

need a help?

find thousands of online teachers now