Lymphatic system
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What is the function of the lymphatic system?
-Drains excess fluid that has leaked from cardiovascular system
-Filters fluid before returning it to the blood
How does lymph move through the system?
-Valves prevent back-flow
-Respiratory pump
-Movement
What are lymph nodes?
-The filtering "station"
-Medulla contains macrophages
-Cortex contains lymphocytes
-Fewer efferent vessels slow down flow: ensures all immune cells can meet pathogens