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Lymphatic System

Bio 169

Produce, Maintain, and distribute lymphocytes to defend against injury and environment
Immune cells such as lymphocytes, macrophages and microphages travel to: sites of injury and infection
Circulation of Fluids Blood plasma to lymph and back to venous system
Primary sites where lymphocytes are formed and mature Red Bone Marrow, Thymus Gland
Secondary sites where lymphocytes are activated and cloned (identical reproductions) *Appendix *Tonsils *Spleen *MALT *Lymph Nodes (Mucosa-associated lymphoid tissue)
Small Lymphatic Vessels Capillaries transfer fluid from the interstitium to the lymphatic vessels on the way back to the heart
Valves Prevent Backflow, similar to veins
Major Lymph collecting vessels: Superficial lymphatics Deep Lymphatics