1. Describe how the atmospheric air is drawn into lungs.
2. Differentiate between Vital capacity n total lung capacity.
3. Describe the structure of the human respiratory system.
4. Write the cause and symptoms of fibrosis.
5. Explain Inspiration and Expiration with the help of diagram

Solution 

Here is the answer to question 2 and 4 -

2. 

Vital Capacity	Total Lung Capacity
It is the maximum volume of air a person can breathe in after forced expiration.	It is the total volume of air accommodated in the lungs at the end of forced inspiration

4, Causes of fibrosis - Exposure to toxins like asbestos, coal dust or silica (including workers in the coal mining and sandblasting industry) can lead to pulmonary fibrosis. 

Symptoms of fibrosis - 

• Shortness of breath
• A dry cough.
• Fatigue.
• Unexplained weight loss.
• Aching muscles and joints.

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