Lymfeårene

Lymfeårene, also known as lymphatic vessels, are a crucial part of the lymphatic system. This network of thin tubes extends throughout the body, working in parallel with the circulatory system. The primary function of lymfeårene is to transport lymph, a clear to whitish fluid containing white blood cells which help the body fight infection.

These vessels begin as tiny, blind-ended capillaries within tissues. As these capillaries merge, they form larger and larger vessels. Lymfeårene have thin walls and are equipped with one-way valves. These valves ensure that lymph flows in a single direction, away from the tissues and towards the heart. The movement of lymph is aided by the contraction of surrounding muscles, breathing movements, and the pulsatile nature of nearby arteries.

Lymfeårene collect excess fluid, proteins, and waste products that leak out of blood capillaries into the interstitial spaces of tissues. This collected fluid, now called lymph, is filtered through lymph nodes, which are small, bean-shaped organs that house lymphocytes and macrophages. These immune cells play a vital role in identifying and destroying pathogens and abnormal cells present in the lymph. After filtration, the lymph is returned to the bloodstream, helping to maintain fluid balance and support the immune system. Any disruption in the function of lymfeårene can lead to conditions like lymphedema, characterized by swelling.