Capillary permeability

Capillary permeability refers to how easily substances like nutrients, oxygen, and waste products pass through the tiny blood vessel walls called capillaries. These vessels have small openings that allow the exchange of these substances between the blood and surrounding tissues. Permeability can vary depending on the body's needs or in response to inflammation or injury, where the opening size may increase to allow more substances through. This process is vital for maintaining tissue health, supporting healing, and ensuring cells receive essential nutrients while waste products are removed efficiently.