The alveoli are normally kept dry by the:-
Correct Answer: Surfactant
Description: Surfactant is a mixture of dipalmitoyl phosphatidyl choline, other proteins & lipids. Role in keeping alveoli dry :- 1. The lipids in the alveolus 2. In the absence of surfactant, the unopposed surface tension in the alveoli would produce a force that greatly ors transudation of fluid from blood into alveoli. Note Factors increasing surfactant synthesis: Factors decreasing surfactant synthesis: Glucocoicoids Thyroxine Stretching of lungs in infancy Beta adrenergic agonist Calcium Smoking Long term inhalation of 100% oxygen Occlusion of main bronchus/pulmonary aery
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now