Question

Which part is missing in the path of air in the human body?

Nose $\to$ Trachea $\to$ ___ $\to$ Bronchioles $\to$ Alveoli

• A. diaphragm
• B. epiglottis
• C. pleura
• D. bronchi

Answer 1

The correct option is D

bronchi

When a person breathes, air passed into the body through the respiratory tract starting with the nose. From the nose, the air goes down the trachea. From here the air goes through two smaller tubes called bronchi, one of which enters each lung. In the lungs, each bronchus divides and redivides into finer tubes called bronchioles. Each bronchiole ends in a number of air sacs called alveoli. The exchange of gases takes place in the alveoli.