Where does the lymphatic system drain?

The lymphatic system primarily drains into the circulatory system. It plays a crucial role in maintaining fluid balance within the body by collecting excess interstitial fluid and transporting it back to the bloodstream. The process helps to eliminate waste products and toxins from tissues and supports immune function by transporting lymphocytes and other immune cells.

In practical terms, lymph collected from the tissues travels through lymphatic vessels and eventually drains into the subclavian veins, which are part of the circulatory system. It is significant to recognize how the lymphatic system's integration with the circulatory system is fundamental for overall health and homeostasis. The other systems listed do not provide the necessary channels for lymph drainage as the circulatory system does, which is essential for its function.