Question

Cilia of trachea transfers:

• A. Mucous into pharynx
• B. Mucous into lungs
• C. Air into lungs
• D. Air into pharynx

Answer 1

The correct option is A Mucous into pharynx

The thin film of mucus accumulated in the oral cavity is cleared by coordinated movement of cilia in the direction towards the pharynx. Thereby, the viscous film of mucus is transported off in the direction towards the mouth, where it is either swallowed or expelled via coughing.

So, the correct answer is option A.