Respiratory System Anatomy pt 2

Question 1

What are the physical characteristics of the trachea?

Answer 1

it is 10-12 cm long; about 2.5 cm in diameter; flexible, mobile

Question 2

What are the three layers of the trachea? and what are they?

Answer 2

1. Mucosa: ciliated pseudostratified columnar epithelium with goblet cells
2. Submucosa: connective tissue with seromucous glands
3. Adventitia: outermost layer made of connective tissue reinforced internally by 16-20 C-shaped cartilage rings that prevent collapse of trachea

Question 3

What inhibits and then destroys cilia? What is the only way to clear mucus because of this?

Answer 3

SMOKING! the only way to clear mucus because of this is COUGHING

Question 4

what happens to the air in the bronchi?

Answer 4

The air in the bronchi is warmed, cleansed of most impurities and humidified

Question 5

How many orders of branching do air passages undergo?

Answer 5

23 orders

Question 6

What are the orders of branching called?

Answer 6

bronchial tree–> bronchioles–> terminal bronchioles

Question 7

What do the Conducting zone structures give rise to?

Answer 7

Respiratory zone structures

Question 8

What are terminal bronchioles?

Answer 8

These are the smallest of all branches. They branch into respiratory bronchioles leading into alveolar ducts and finally into alveolar sacss