The immune system is the body’s defense mechanism against harmful invaders such as bacteria, viruses, fungi, and parasites. It consists of a network of cells, tissues, and organs, including white blood cells, the lymphatic system, bone marrow, and the spleen, all working together to protect the body. The immune system is divided into two main parts the innate immune system, which provides immediate, general defense, and the adaptive immune system, which creates a targeted response to specific pathogens and remembers past infections to provide faster protection in the future.
When the body is exposed to an infection, the innate immune system is the first line of defense, using barriers like skin, mucous membranes, and inflammation to limit the spread of pathogens. If the infection persists, the adaptive immune system takes over, activating specialized cells like T-cells and B-cells to attack the invader. The adaptive system also creates antibodies, which are proteins that can recognize and neutralize pathogens. Vaccines are an important tool for training the immune system to recognize and fight specific diseases without causing illness. A healthy immune system is essential for overall well-being, as it continuously works to maintain balance and prevent infections. Shutdown123