ANATOMY

Detailed explanation-1: -Phagocytes recognize when something enters your body that doesn’t belong there and jump to work. They destroy the invaders using a process called phagocytosis.

Detailed explanation-2: -Immunodeficiencies occur when a part of the immune system is not present or is not working properly. 12. When the immune system attacks healthy organs and tissues, it’s called an autoimmune disorder.

Detailed explanation-3: -When the body senses foreign substances (called antigens), the immune system works to recognize the antigens and get rid of them. B lymphocytes are triggered to make antibodies (also called immunoglobulins). These proteins lock onto specific antigens.

Detailed explanation-4: -In an immune response, the immune system recognizes the antigens (usually proteins) on the surface of substances or microorganisms, such as bacteria or viruses, and attacks and destroys, or tries to destroy, them.

Detailed explanation-5: -How is the immune system activated? The immune system can be activated by a lot of different things that the body doesn’t recognize as its own. These are called antigens. Examples of antigens include the proteins on the surfaces of bacteria, fungi and viruses.