Which of the Following Does NOT Promote Elastic Recoil of the Lungs

Question

Which of the following does NOT promote elastic recoil of the lungs
A)elastic fibres in the lung
B)surface tension of the fluid lining the alveoli
C)pulmonary surfactant
D)elastic fibres in the bronchiole

Accepted Answer

Pulmonary surfactant reduces surface tension in the alveoli, which helps to prevent their collapse during exhalation. However, this reduction in surface tension actually decreases elastic recoil. Therefore, pulmonary surfactant does not promote elastic recoil of the lungs.