Explain the role of haemoglobin in transport of oxygen.

5

(a)

Give a chart of partial pressure of oxygen and carbon dioxide at different places in the respiratory system:

5

(a)

What is tidal volume? Find out the tidal volume for a healthy human in an hour time?
 Also, label the parts A, B, Cand D in the given, figure of alveolus.

5

(a)

What are the major transport mechanisms for CO₂? Explain.

5

(a)

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

5

(a)

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

5

(a)

How does diaphragm facilitate respiration?

5

(a)

Explain the structure of human respiratory system with the help of suitable diagram.

5

(a)

What are the various respiratory mechanisms in different animals?

5

(a)

Give a diagrammatic representation of transport of gases in alveoli and systemic tissues.

5

(a)