It's from tissue fluid, which itself is derived from cappillaries
Lymph vessels,lymph nodes,spleen,
The lymphatic system lacks a central pump, such as the heart in the circulatory system, to move lymph fluid. It also lacks a closed system of vessels, as lymph can flow in either direction through the lymphatic vessels.
Lymph is formed when interstitial fluid and proteins from the tissues enter lymphatic vessels through lymph capillaries. This fluid is then transported through lymphatic vessels and filtered through lymph nodes before ultimately re-entering the blood circulation through the thoracic duct or right lymphatic duct.
0the component of the lymphatic system is the lymph nodes
in lymphatic vessels
Lymph capillaries
Afferent lymphatic vessels
Lymph is a fluid. It flows through the lymphatic vessels by one way valves which allows lymph move way through lymphatic system. Subclavian suction, and skeletal muscle pumps help to propel the lymph through the lymphatic vessels.
Lymph capillaries
The lymphatic system includes organs and cells that filter lymph and blood and destroy foreign microorganisms. Lymph leaks out of capillaries to bathe body cells and circulates among tissue cells and the heart. Organs of the lymphatic system contain lymphatic tissue, Lymphocytes, a few other cell types, and connective tissue.
The lymph nodes are the only lymphatic organ with afferent vessels. Afferent vessels carry lymph fluid into the lymph nodes, where it is filtered and processed before being returned to circulation through efferent vessels.
The sequence of fluid flow is blood capillaries.... interstitial space or interstitial fluid..... lymphatic capillaries.... lymphatic vessels.... lymphatic ducts..... junction of the internal jugular and subclavian veins. Then what helps this whole sequence is the skeletal muscle pump and the respiratory pump.