stromalevæsken

Stromalvæsken, also known as interstitial fluid, is the fluid found in the interstitial spaces of tissues throughout the body. It is derived from plasma, the liquid component of blood, and is formed when blood plasma filters out of capillaries. This fluid is essential for the exchange of nutrients, gases, and waste products between the blood and the body's cells. It bathes the cells, providing them with oxygen and nutrients while removing metabolic waste and carbon dioxide. Stromalvæsken also plays a crucial role in the immune system by transporting immune cells and other defense molecules throughout the body. The composition of stromalvæsken is similar to plasma but with a lower concentration of proteins, as most large proteins are retained within the blood vessels. This fluid is continuously circulating, with a portion returning to the bloodstream via venules and capillaries, and another portion entering the lymphatic system to become lymph. The balance of fluid within the interstitial space is regulated by various factors, including hydrostatic and osmotic pressures within the blood vessels and tissues. Disruptions to this balance can lead to edema, a condition characterized by the accumulation of excess stromalvæsken in the tissues.