1. Hyaline membrane disease of the newborn, a disease in which the Infant experiences great difficulty breathing, is characterized by a lack of pulmonary surfactant production. Which cells within the lung are responsible for producing surfactant?

2. The following questions refer to the micrograph shown here.

a. What typo of airway Is indicated in this micrograph? (The star is In the lumen of the airway In question.)

3. Explain the reasoning for the answer to part (a) of this question. That is. explain the histological features of the airway (epithelium, cartilage, etc.) that were used to determine the answer.