PATHOLOGY

Detailed explanation-1: -Surfactant is released from the lung cells and spreads across the tissue that surrounds alveoli. This substance lowers surface tension, which keeps the alveoli from collapsing after exhalation and makes breathing easy.

Detailed explanation-2: -For gas exchange to occur, the small air sacs within the lungs (alveoli) must remain open and filled with air. Alveoli are kept open by the elastic structure of the lung and by a liquid lining called surfactant. Surfactant counters the natural tendency of the alveoli to close (collapse).

Detailed explanation-3: -What is surfactant? Surfactant is a mixture of fat and proteins made in the lungs. Surfactant coats the alveoli (the air sacs in the lungs where oxygen enters the body). This prevents the alveoli from sticking together when your baby exhales (breathes out).

Detailed explanation-4: -3) Surfactant helps keep the alveoli relatively “dry”-a high surface tension would suck fluid away from the alveolar walls into the alveolar space but with the decreased surface tension provided by surfactant, the alveolar space is maintained in a “relatively dry state” (ie.