Lymphatic system - Elizabeth Bauer Consults
Lymphatic system - Elizabeth Bauer Consults
Lymphatic system - Elizabeth Bauer Consults
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<strong>Lymphatic</strong> System: Lymph Nodes<br />
Lymph nodes contain cavities, called sinuses,<br />
into which the lymph flows.<br />
The walls of the sinuses are lined with<br />
phagocytic cells, which engulf any foreign<br />
particles like bacteria. Tests have<br />
demonstrated that over 99% of the bacteria<br />
carried into a node are screened out before the<br />
lymph leaves the node on its return to the<br />
blood.<br />
This filtering mechanism is one of the most<br />
important body defenses against infectious<br />
disease. When combating a heavy infection, the<br />
lymph nodes enlarge producing "swollen<br />
glands."