vascular permeability

Vascular permeability refers to the ability of blood vessel walls to allow certain substances, like nutrients, fluids, and immune cells, to pass through. This process is crucial for maintaining tissue health, enabling immune responses, and supporting healing. When tissues need protection or repair, blood vessels become more permeable, letting more helpful substances reach the affected area. Conversely, excessive permeability can lead to issues like swelling or inflammation. Overall, vascular permeability is a controlled process that helps balance substance exchange between blood and tissues to support body functions.