The immune system protects the body from pathogens from "summary" of NCERT Solutions - Biology for Class 12th by Dr. Madhurbhashini,Sargam Hans,Shanya Hans
The immune system is a complex network of cells, tissues, and organs that work together to defend the body against harmful pathogens such as bacteria, viruses, and parasites. It is like a fortress that protects our body from invaders that can cause diseases and infections. The immune system is comprised of two main parts: the innate immune system and the adaptive immune system. The innate immune system is the first line of defense and provides immediate, nonspecific protection against pathogens. This includes physical barriers like the skin and mucous membranes, as well as immune cells like macrophages and neutrophils that engulf and destroy pathogens. The adaptive immune system, on the other hand, provides a more specif...
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