Question

No exchange of gases occurs here. 2. : Secrete a fluid containing surfactant. 3. : Where the respiratory zone of the lungs begins. 4. : Form a simple squamous epithelium in the alveoli. 5. : Terminates in alveoli. 6. : Are cuboidal cells. 7. The respiratory membrane consists of 3 layers: capillary endothelium, fused basement membrane and alveolar epithelium consisting of .

Answer 1

Answer:

1) Segmental (tertiary) bronchi.

2) Type II alveolar cells.

3) Respiratory bronchioles.

4) Type I alveolar cells.

5) Alveolar duct.

6) Type II alveolar cells.

7) Type I alveolar cells.

Explanation:

All of the structures and cells mentioned above are part of the respiratory system.

The respiratory system is composed of several organs and its main function is to take in oxygen and expel carbon dioxide.

The gas exchange occurs in the alveoli, tiny air sacs in the lungs. But to reach the alveoli, the air first goes through the nose, the mouth, the larynx, the trachea, the bronchi and the bronchioles.

Answer 2

Answer:

• There is a specific path way for the whole exchange system of the human body and other animal's body. As the exchange of the gaseous system starts over from the start of the lungs or alveolis (the small sacs present inside the lungs) towards the blood stream inside the circulation system of the body. And here is the region for the initiation of the respiratory zone of the lungs begins and ends up in the bloodstream back towards the lungs of the human body.        
• The respiratory membrane consists of 3 layers: capillary endothelium, fused basement membrane and alveolar epithelium consisting of small air spaces or alveolas.