Question

(C) prevents bacteria and other microorganisms from
entering into the body
(d) both (c) and (d).
(ii) Rings of cartilage are present in the throat. These
ensure that :
(a) the air passage will not collapse
(b) a limited amount of air will enter the body
(c) sufficient air will enter the body
(d) none of these
(it) Within the lungs, the passage divides into smaller and
smaller tubes which finally terminate in balloon-like

Answer 1

Answer:

In the trachea, or windpipe, there are tracheal rings, also known as tracheal cartilages. Cartilage is strong but flexible tissue. The tracheal cartilages help support the trachea while still allowing it to move and flex during breathing.