The Lymph Node
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Although many afferent lymphatic vessels carry lymph to a lymph node, there is only one efferent lymphatic vessel carrying lymph away from the node (Applegate, 2000, 289). Because there are more afferent vessels than efferent vessels, lymph flows slowly through the sinuses of the node, allowing time for the cleansing process to take place. It is important that lymph flow slowly through the lymph nodes because they are the only structures in the body that filter the lymph, which is their primary function. As the lymph passes through the sinuses of the lymph node, damaged cells, cellular debris, infectious agents, and cancer cells are trapped by the fibrous mesh in the node and removed from the lymph before it is returned to the blood. In the node, lymphocytes react against the bacteria, viruses, and cancerous cells and destroy them (Applegate, 2000, 290). Macrophages in the node engulf t
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Approximate Word count = 604
Approximate Pages = 2 (250 words per page)
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