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Question: Answered & Verified by Expert
Read the following statements.

a) High H+ concentration and higher temperature are favourable for dissociation of oxygen from oxyhaemoglobin.
b) Partial pressure of oxygen in alveoli is higher than in tissue.
c) The maximum volume of air a person can breathe in after a forced expiration is vital capacity.
d) In alveoli PCO2 low and PO2 high are for dissociation of CO2 from carbamino haemoglobin.

How many of the above statements are true?
BiologyBreathing and Exchange of GasesNEET
Options:
  • A One
  • B Two
  • C Three
  • D Four
Solution:
2781 Upvotes Verified Answer
The correct answer is: Four
Vital Capacity (VC) is the maximum volume of air a person can breathe in after a forced expiration. This includes ERV, TV and IRV or the maximum volume of air a person can breathe out after a forced inspiration.In the alveoli, where there is high pO2, low pCO2, lesser H+ concentration and lower temperature, the factors are all favourable for the formation of oxyhaemoglobin, whereas in the tissues, where low pO2, high pCO2, high H+ concentration and higher temperature exist, the conditions are favourable for dissociation of oxygen from the oxyhaemoglobin.

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