alveolar-capillary permeability

Alveolar-capillary permeability refers to how easily substances can move between the tiny air sacs in our lungs (alveoli) and the blood vessels (capillaries) that surround them. This process is crucial for exchanging oxygen and carbon dioxide. When permeability is optimal, oxygen easily enters the bloodstream, while waste gases like carbon dioxide can exit. However, if this permeability increases too much due to inflammation or injury, harmful substances can also enter the blood, leading to respiratory issues. Maintaining proper alveolar-capillary permeability is essential for effective lung function and overall health.