The immune system defends the body by recognizing and neutralizing harmful pathogens like bacteria, viruses, and fungi. It includes barriers like the skin, white blood cells that attack invaders, and specialized organs like the spleen and lymph nodes. The adaptive immune system "remembers" past infections, providing quicker and stronger responses to subsequent attacks.
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The human immune system protects the body from infections and diseases by identifying and neutralizing harmful pathogens like bacteria, viruses, and fungi. It uses innate immunity as a first defense and adaptive immunity to recognize and remember specific pathogens, producing targeted responses through white blood cells, antibodies, and specialized cells.
The human immune system protects the body from infections and diseases through a complex network of cells, tissues, and organs that work together to identify and neutralize harmful pathogens like bacteria, viruses, and fungi. The immune system uses physical barriers like the skin and mucous membranes, while the innate immune system provides an immediate response to general threats. The adaptive immune system, which includes specialized white blood cells (T cells and B cells), provides a targeted response to specific pathogens and "remembers" them for faster defense in future encounters. This combined defense helps prevent infections and manage diseases.