ANATOMY

Detailed explanation-1: -The immune system is a complex network of organs, cells and proteins that defends the body against infection, whilst protecting the body’s own cells.

Detailed explanation-2: -Innate and adaptive immune system There are two subsystems within the immune system, known as the innate (non-specific) immune system and the adaptive (specific) immune system. Both of these subsystems are closely linked and work together whenever a germ or harmful substance triggers an immune response.

Detailed explanation-3: -A complex network of cells, tissues, organs, and the substances they make that helps the body fight infections and other diseases.

Detailed explanation-4: -Definition: The immune system is a network of cells, tissues, and organs that work together to defend the body against attacks by “foreign” invaders. More: The reaction by the immune system to antigens (substances such as bacteria and viruses) that the body recognizes as foreign is called immune response.

Detailed explanation-5: -Organs and tissues of the immune system include the bone marrow, spleen, thymus, tonsils, mucous membranes, and skin. Granulocytes, macrophages, and T lymphocytes are examples of specialized cells. The lymphatic vessels of the immune system carry immune cells, which converge in lymph nodes found throughout the body.