Chapter 22 - Check Your Recall

Respiratory epithelium is best defined as

pseudostratified ciliated columnar epithelium with goblet cells

Which of the following is a trend in the respiratory tract?

- The epithelium gets progressively shorter in lower passages. - The amount of smooth muscle increases in the smaller passages - The amount of elastic fibers increases in the smaller passages.

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Nasal Cavity

1

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Respiratory bronchiole

10

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Alveolar Duct

11

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Alveolar sac

12

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Nasopharynx

2

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Oropharynx

3

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Laryngopharynx

4

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Larynx

5

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Trachea

6

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Bronchi

7

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Bronchiole

8

Number the following structures of the respiratory tract in the proper order. The structure that comes into contact with the oxygenated air first should be number 1, and the structures where gas exchange takes place should be number 12: Terminal bronchiole

9

What takes place across the respiratory membrane? Be Specific.

Exchange of gas takes place across the respiratory membrane. At the membrane the alveolar and capillaries surface meet and exchange of gases take place in the bloodstream. Oxygen moves into bloodstream where carbon dioxide exits it.

Which of the following is NOT a trend we find within the respiratory tract?

The amount of hyaline cartilage gradually increases as we move to smaller passages.

Where is the pleural cavity located? What is its function?

The pleural cavity is the space between the pleura, the two thin membranes that line and surround the lungs. The pleural cavity contains a small amount of liquid known as pleural fluid, which provides lubrication as lungs expand and contract during respiration.

The first passages of the respiratory zone, which have alveoli in their walls, are called

terminal bronchioles

The structure that seals off the nasopharynx during swallowing is called the

uvula