Anatomy & Physiology Chapter 9 Vocabulary

Largest lymphoid organ.

• prion
• fever
• allergen
• spleen

The process of activation of the immune system in advance of the presence of a disease; is accomplished by administration of a vaccine.

• passive immunization
• active immunization
• immunization
• inflammation

Self markers that allow your body to recognize the cells that belong to you.

• major histocompatibility complex (MHC) proteins
• natural killer (NK) cells
• antigen-presenting cell (APC)
• monoclonal antibodies

Enzyme in saliva and tears that kills certain kinds of bacteria.

• histamine
• lysozyme
• cytokines
• basophil

A protein molecule released by a B cell or a plasma cell that binds to specific antigens.

• antigen
• antibody
• allergy
• prion

A cell that displays antigen-MHC complexes on its surface and can trigger an immune response by lymphocytes.

• helper T cell
• mast cell
• antigen-presenting cell (APC)
• natural killer (NK) cells

Type of T lymphocyte that orchestrates cell-mediated immunity by direct contact with other immune cells and by releasing chemicals called lymphokines.

• helper T cell
• T cell
• plasma cell
• memory cell

Disease-causing microorganism, such as a bacterium or virus.

• antigen
• prion
• pathogen
• allergen

An infectious misfolded protein that replicates by causing a normal protein in the infected animal to misfold, producing another one.

• pathogen
• prion
• spleen
• virus

Overzealous immune response to an otherwise harmless substance.

• allergen
• spleen
• allergy
• fever