Question 1
Define vital capacity. What is its significance?

Question 3
Diffusion of gases occurs in the alveolar region only and not in the other parts of respiratory system. Why?

Question 4
What are the major transport mechanisms for CO2? Explain.

Question 5
What will be the pO2 and pCO2 in the atmospheric air compared to those in the alveolar air?
(i) pO2 lesser, pCO2 higher
(ii) pO2 higher, pCO2 lesser
(iii) pO2 higher, pCO2 higher
(iv) pO2 lesser, pCO2 lesser

Question 8
What is the effect of pCO₂ on oxygen transport?

Question 7
How is respiration regulated?

Question 9
What happens to the respiratory process in a man going up a hill?

Question 10
What is the site of gaseous exchange in an insect?

Question 11
Define the oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?

Question 12
Have you heard about hypoxia? Try to gather information about it, and discuss with your friends.

Question 13
Distinguish between
(a) IRV and ERV
(b) Inspiratory capacity and Expiratory capacity
(c) Vital capacity and Total lung capacity

Question 14
What is Tidal volume? Find out the Tidal volume (approximate value) for a healthy human in an hour.