Question

state the role of the following in the human respiratory system 1. nasal cavity 2. diaphragm 3. alveoli​

Answer 1

Answer:

(ii) Diaphragm It is a muscular partition between the thoracic and abdominal region in our body. Movement of diaphragm helps in the breathing process. (iii) Alveoli These are balloon-like structures, which increases the surface area for the gaseous exchange in lungs

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Answer 2

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Answer:

(i) Nasal hairs These are fine hairs present in the inner lining of the nasal passage. These hairs help in filtering the air passing through nostrils so that, germ free air could reach the lungs.

(ii) Diaphragm It is a muscular partition between the thoracic and abdominal region in our body. Movement of diaphragm helps in the breathing process.

(iii) Alveoli These are balloon-like structures, which increases the surface area for the gaseous exchange in lungs.