Pharynx opens into the trachea through:

The structure of the respiratory system that filters the air:

The floor of the chest cavity is :

Vocal cords are located in…………

The structural and functional units of the Lung are………………

The membrane that protects the lungs:

When pressure is exerted on lungs, the following one occurs.

When air is blown from mouth into a test tube containing lime water, the lime water turned milky. This shows that exhaled air consists of:

During respiration, the composition of this gas remains same.

After undergoing strenuous exercise ………… deficiency occurs.