Question

1. As you move from the primary to tertiary bronchi, which change would you note regarding the amount of hyaline cartilage present?

a) It decreases

b) It increases

c) It stays the same

2. As you move from the primary to tertiary bronchi, how does the proportion of goblet cells and seromucous glands change?

A) It decreases

B) It increases

C) It stays the same

3. As you move from the primary to tertiary bronchi, which change would you note regarding the amount of smooth muscle present?

A) It decreases

B) It increases

Answer 1

Ans:-

1) a) it decreases.

As we move down from primary bronchus the amount og hyline cartilage decreaeas because to assist gasious exchange and also it will not hamper in process of terminal bronchiole dilatation and constriction.

2) a) DECREAES.

When we move down from primary bronchus to tertiary bronchus the number of Goblet cell decreases to reduce the production of mucus which may hamper the gas exchange in the alveoli

3) b) INCREEASEs

When we move from primary bronchus two terminal bronchus the amount of smooth muscle increases because terminal bronchioles and respiratory bronchioles are the structure where bronchodilation and bronchoconstriction occur which is main the mediated by smooth muscle