Answer
The secretions that are released into intestinal space to diffuse into the blood is called lymph.
Definition
Lymph is a biological fluid produced as the effluent of intestinal fluid from parenchymatous organs.
Formation of lymph
In every parenchymal organ the interstitial fluid is formed by products of cellular secretions, metabolism/ catabolism as well as solute, molecules and proteins that extravasate from blood capillaries. Lymphatic capillaries have one open blunt-end, which facilitates drainage of the interstitial fluid and the movement of immune cells and apoptotic cells into the lymphatic circulation. The other end will coalesce into a lymphatic collector. Additionally gaps between lymphatic endothelial cells, which function as a one-way valve, further facilitate cell and solute collection into the lymphatic capillaries .
Role of lymph
It controls different functions such as maintenance on immunity tolerance, autoimmunity, inflammation, cancer metastasis, cardiovascular and metabolic disorders.