DEVELOPMENTAL ASPECTS
OF THE RESPIRATORY SYSTEM
23. Mrs. Jones gave birth prematurely to her first child. At birth, the baby
weighed 2 lb 8 oz. Within a few hours, the baby had developed severe
dyspnea and was becoming cyanotic. Therapy with a positive pressure
ventilator was prescribed. Answer the following questions related to the
situation just described. Place your responses in the answer blanks.
1. The infant's condition is referred to as
2. It occurs because of a relative lack of
3. The function of the deficient substance is to
4. Explain what the positive pressure apparatus accomplishes.