Match the following terms to their definitions Drag the appr

Match the following terms to their definitions. Drag the appropriate labels to their respective targets. Terms may be used more than once. 1.: 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 .

Solution

1. Segmental bronchi

2. Type II cells

3. Respiratory bronchioles

4. Type I cells

5. Alveolar duct

6. Type II cells

7. Type I

Type I cells - these are alveolar cells that are composed of squamous epithelium and are involved in gas exchange .

Type II cells - These cover a small fraction of alveolar surface area. They secrete a pulmonary secretion which reduces the surface tension in the alveoli.

Respiratory bronchioles- They are characterised by the presence of alveoli in their walls , which splits into the alveolar ducts, and terminate in alveolar sacs.

Alveolar ducts - These are tiny ducts that contains a small collection of alveoli and end or terminate into alveoli.

Segmental bronchi- These are also known as tertiary bronchi which gives a bronchopulmonary segment, which is a division of lung separated from the rest of the body.