Question

e 23 divisions
1) Trachea undergoes:
a) 20 divisions
b) 21 divisions
X
d) 25 divisions​

Answer 1

Explanation:

The point where the trachea divides into the bronchi is called the carina. ... The segmental bronchi divide into many primary bronchioles that divide into terminal bronchioles. Each terminal bronchiole then gives rise to several respiratory bronchioles, which go on to divide into two to 11 alveolar ducts

but your answer is 21

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