Question

1. which statement is not true of cilia in the respiratory tract? they close the windpipe opening when swallowing. they help clean the respiratory system. they move mucus from the bronchi to the pharynx. they are thin structures that resemble hairs

Explanation:

Cilia in respiratory tract move mucus, clean system, are hair - like. Epiglottis closes windpipe when swallowing, not cilia.

Answer:

They close the windpipe opening when swallowing