Ciliary Movement in Internal Organs — NEET Biology
📚 Practice ConceptCiliary movement occurs in most of our internal tubular organs which are lined by ciliated epithelium. The coordinated movements of cilia in the trachea help us in removing dust particles and some of the foreign substances inhaled along with the atmospheric air. Passage of ova through the female reproductive tract is also facilitated by the ciliary movement.
Assertion (A): Cilia in the respiratory tract help maintain airway cleanliness. Reason (R): Coordinated ciliary movements trap and absorb dust particles into the epithelial cells.
View solution & NCERT explanation
Correct answer: C — If assertion is true but reason is false.
NCERT confirms cilia help maintain airway cleanliness (Assertion true). However, NCERT states “The coordinated movements of cilia in the trachea help us in removing dust particles and some of the foreign substances inhaled along with the atmospheric air” - cilia remove particles, they don’t trap and absorb them into cells as the Reason claims.
What does NCERT say about Ciliary movement occurs most?
Has this concept appeared in NEET?
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