Which structure or substance is responsible for helping filter and clean air as it passes through the trachea and bronchioles?Question options:A) Nasal passagesB) CiliaC) SalivaD) Alveoli

Respuesta :

BIOLOGY > HUMAN BIOLOGY > RESPIRATORY SYSTEM

EXPLANATION:

Cilia filters the air coming inside lungs by secreting mucus which protects the trachea and bronchioles and where substances sticks on.

ANSWER: B