Lungs have a large number of narrow tubes called |
|||||||
a) |
Alveoli |
b) |
Bronchi |
c) |
Bronchioles |
d) |
Tracheae |
Lungs have a large number of narrow tubes called |
|||||||
a) |
Alveoli |
b) |
Bronchi |
c) |
Bronchioles |
d) |
Tracheae |
(c)
Bronchioles are formed by branching of tertiary bronchi. Bronchioles divide into terminal bronchioles, respiratory bronchioles. Bronchioles are without cartilaginous rings.