Respiratory System: L2

Question 1

What is the epithelium that lines conduction zone?

Answer 1

Psuedostratified ciliated columnar epithelium.

Question 2

What are the structures found in the bronchus?

Answer 2

Cilitaed epithelium, goblet cells, smooth muscle, mucus glands, Cartilage plate

Question 3

What is the main function of the bronchus?

Answer 3

Conducting Air

Question 4

What is the main function of the bronchioles?

Answer 4

Control flow of air, Smooth muscles allows constructions and relaxation (BUT limited)

Question 5

What is the proving tone to the wall of the bronchioles?

Answer 5

Smooth muscle as there is no muscle.

Question 6

What structure are absent in the bronchioles?

Answer 6

Cartilage plates, Goblets cells, Mucus glands.

Question 7

What structures are present in the bronchioles?

Answer 7

Smooth muscle, Club cells, Columnar ciliated cells.

Question 8

What is Club Cell Secretion?

Answer 8

Secreted by club cells in the bronchioles. More watery, antibacterial, can still capture dust particles and move it.

Question 9

What conditions affects bronchioles?

Answer 9

Asthma, Constriction of bronchioles.

Question 10

How does Asthma Inhaler work?

Answer 10

Relaxes smooth muscle in the Bronchioles ( Bronchodilator ) Using Salbutanol.

Question 11

Is there gas exchange in the respiratory bronchioles?

Answer 11

No, too thick.

Question 12

What are the 3 major cells in the Alveoli?

Answer 12

Type 1 cells (Squamous Pneumocytes)
Type 2 cells (surfactant) Secretes Surfactant.
Alveolar Macrophages.

Question 13

What is the main function of the surfactant that is secreted by the surfactant cells in the alveoli?

Answer 13

Reduce tension on the water layer lining the alveoli.The alveoli would collapse if there was only a water layer.