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​Prior to Birth and Breathing,the Lung Is Solid and Will

Question 72

Multiple Choice

​Prior to birth and breathing,the lung is solid and will sink in water.At birth,the lungs begin to fill with air,inflating the alveoli.The degree of inflation depends on the presence of __________,a fatty molecule on the respiratory membrane.


A) ​alveoli
B) ​hyaline membrane
C) ​visceral pleura
D) ​surfactant

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