What system do lymphatic vessels connect to?

Lymphatic vessels are an integral part of the lymphatic system, which plays a crucial role in the body's immune function and fluid balance. They connect to the cardiovascular system by draining excess interstitial fluid from tissues and returning it to the bloodstream. This connection helps maintain the appropriate volume of blood and fluid in the circulatory system.

Additionally, lymphatic vessels transport lymph, which contains lymphocytes and other immune cells, back to the circulatory system, facilitating immune responses. This interaction exemplifies how the lymphatic system supports the cardiovascular system in maintaining homeostasis. In contrast, the nervous system, endocrine system, and respiratory system do not have a direct connection with lymphatic vessels functioning in this context.