What is one of the primary functions of the lymphatic system?

One of the primary functions of the lymphatic system is to maintain fluid balance in the body. The lymphatic system works to collect excess interstitial fluid, which is the fluid that exists in the spaces between cells. This excess fluid can accumulate in tissues due to the filtration of blood at capillary beds, where not all fluid returns directly to the bloodstream. The lymphatic vessels transport this fluid, now called lymph, back into the circulatory system, particularly at the thoracic duct and right lymphatic duct.

By performing this function, the lymphatic system helps to prevent edema, which is the swelling caused by fluid retention in tissues. Additionally, the lymphatic system plays a vital role in the immune response by transporting lymphocytes, or immune cells, throughout the body. This fluid balance is essential for homeostasis and overall health, as it ensures that tissues remain hydrated and free from excess fluid buildup.

The other options relate to different bodily systems and functions. The production of hormones is primarily the role of the endocrine system, regulation of blood pressure is maintained by the cardiovascular system, and the absorption of oxygen occurs in the respiratory system. Each of these functions is crucial in its own right but does not pertain directly to the core function of the lymph