Lymphatic System

The lymphatic system returns leaked plasma to the blood to the blood vessels after cleansing it of bacteria and other foreing matter. It als...

Spleen: filters and cleanses blood of bacteria, viruses, and other debris. Provides a lymphocyte profileration. Destroys worn-out red blood...

Skin              - Acid Mantle: Inhibits bacterial growth              - Keratin: provides resistance against acids, alkalis, and bacteri...

This line of defense uses enormous number of cells and chemicals to protect itself. It mainly relies on phagocytes, natural killer cells, an...

Specific or Adaptive defense system is often referred as the body's third line of defense. This defense recognizes foreign molecules a...

Antigens are large, complex molecules recognized as foreign by the body. Foreign proteins are the strongest antigens. Antigens also provok...

Antibodies or immunoglobulins (Igs) are soluble proteins secreted by activated B cells or by their plasma-cell offspring in response to an a...

Active immunity is when your B cells encounter antigens and produce antibodes against them. Naturally Acquired during bacterial and viral i...

B cell- lymphocyte residing in the lymoh nodes or other lymphoid organs Plasma Cell- antibody-producing "machine"; produces hu...

Most important disorders of the immune system are autoimmune diseases, allergies, and immunodeficiencies . Autoimmune diseases - the body ...