How does lymph enter a lymph node through afferent lymphatic vessels?

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Diagram of the human lymphatic system highlighting lymphatic vessels and major lymphoid organs, including lymph nodes, adenoids, tonsils, thymus gland, spleen, appendix, bone marrow, and ducts. — lymphatic system The human lymphatic system, showing the lymphatic vessels and lymphoid organs.

Lymph enters a lymph node through afferent lymphatic vessels, which drain into the node through its convex surface. These vessels may transport lymph directly from lymphatic capillaries or from a previously connected lymph node. Once inside, the lymph and its associated cells are processed as part of the lymphatic system to filter foreign antigens and facilitate immune responses.1