Question

What is the function of the cilia in the cilliated cells of
respiratory tract in human beings ?
(A) Protect the epithelial cells from the inhaled air.
(B) Increase surface area for the absorption of oxygen.
(C) Produce sweeping movements to remove excess mucus.
(D) Provide structural support and stabilise the respiratory
tract.​

Answer 1

correct ans is

(C) Produce sweeping movements to remove excess mucus.

Answer 2

Answer:

In humans , for example, motile cilia are found on the respiratory epithelium lining the respiratory tract where they function in the mucociliary clearance of sweeping mucus and dirt out of the lungs .Each cell in the respiratory epithelium has around 200 motile cilia.