nyirokcsatornákon

Nyirokcsatornák refers to lymphatic vessels in Hungarian. These are a network of thin tubes that run throughout the body, similar to blood vessels. They are a crucial part of the lymphatic system, which plays a vital role in the immune system and fluid balance. The lymphatic system collects excess fluid, known as lymph, from the body's tissues and returns it to the bloodstream. Lymphatic vessels are responsible for transporting this lymph.

These vessels begin as small, blind-ended capillaries in the tissues, which collect interstitial fluid. As these capillaries merge, they form larger vessels that eventually converge into two main lymphatic ducts: the thoracic duct and the right lymphatic duct. The thoracic duct is the largest lymphatic vessel in the body and collects lymph from the majority of the body, draining into the left subclavian vein. The right lymphatic duct collects lymph from the upper right quadrant of the body and drains into the right subclavian vein.

The walls of lymphatic vessels are thin and permeable, allowing for the easy passage of interstitial fluid and larger molecules like fats and proteins. They also contain valves, similar to those in veins, which prevent the backflow of lymph and ensure its unidirectional movement towards the heart. Lymphatic vessels are responsible for transporting not only lymph but also other important substances, including fats absorbed from the digestive system and immune cells such as lymphocytes. Infections or blockages in these vessels can lead to swelling, known as lymphedema.