Question

Trachea, bronchi, and bronchioles are all supported by _______

(a) incomplete cartilaginous rings

(b) complete cartilaginous rings

(c) in-cartilaginous rings

(d) bones

This question was posed to me in a job interview.

I need to ask this question from Human Respiratory System topic in section Breathing and Exchange of Gases of Biology – Class 11

Answer 1

Right answer is (a) incomplete cartilaginous rings

For explanation: Trachea, bronchi, and bronchioles are all supported by incomplete cartilaginous rings. They are actually hyaline cartilage and this is strong enough to hold the mentioned parts. They are also supported by a small smooth muscle at the end of the trachea.