HUMAN ANATOMY.....In babies born prematurely, Type II cells have not fully matur
ID: 166207 • Letter: H
Question
HUMAN ANATOMY.....In babies born prematurely, Type II cells have not fully matured yet, resulting of HYPOsecretion of surfactant. What would be the effect on the function of the alveoli?
n babies born prematurely, Type Il cells have not fully matured yet, resulting of HYPOsecretion of surfactant. What would be the effect on the function of the alveoli? o Alveoli would not be able to inflate o It would take more energy to inflate alveoli O Alveoli would deflate o Once inflated, alveoli would stay inflated o There would be no effect. Submit My Answers Give UpExplanation / Answer
Choice 1 is correct.
Reason: Surfactant is a kind of glycoprotein secreted by alveolar type 2 cells. This surfactant plays a crucial role in preventing collapse of lungs during expiration. As a person expires air out, the alveolar sacs tend to come closer. This close association between alveolar walls can increase surface tension due to sticking of the walls together and extremely high pressure would be required to breath in again. This will become a case of forced breathing and significantly reduce the respiratory efficiency. Further, it is more deleterious in infants since they are less capable of forced respiration. Thus, such lack of surfactant can lead to respiratory failure. Hence, in infant with disorder leading to failure of surfactant production, there will be failure of pulmonary infiltration, impaired ventilation and alveolar gaseous exchange.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.