Lymphatic ducts are long tubular structures that connect lymph nodes and other organs to the lymphatic vessels. They play an important role in the human immune system as they transport lymphocytes and other immune system cells to the site of infection or injury.
Lymphatic ducts have a diameter of about 0.2-0.5 mm and can be of different lengths. Depending on the location, they can have different shapes and directions. For example, the lymphatic ducts of the thoracic duct pass through the chest cavity and empty into the thoracic lymph node.
In addition, lymphatic ducts are involved in the exchange of substances between blood and tissues. They contain protein, fats, carbohydrates and other substances that are transferred from tissues to the lymphatic vessel. In turn, the lymphatic vessels carry the fluid that contains these substances back into the blood.
Normally, the lymphatic ducts function without any problems, but in some diseases, such as cancer, infection or injury, they can become damaged. This can lead to disruption of lymph outflow and the development of lymphedema and tissue edema.
Thus, the lymphatic ducts play an important role in the functioning of the immune system and metabolism. Damage to these structures can lead to serious health consequences and requires prompt treatment.