Lymphatic System: Crash Course A&P

The video uses the analogy of an airport security line to explain the lymphatic system's role in maintaining fluid balance and supporting the immune system. It describes the structure and function of the lymphatic system, including lymph, lymphatic vessels, and lymph nodes. The lymphatic system collects and returns interstitial fluid to the bloodstream, preventing edema and supporting cardiovascular function. It also plays a crucial role in immune defense by filtering lymph and housing immune cells like lymphocytes and macrophages. Mucosa-associated lymphoid tissues (MALTs) provide additional checkpoints for immune defense.

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