Ch 24 Vocab Flashcards
an organism that causes disease
pathogen
a disease that is spread from one living thing to another or through to environment
communicable disease
a condition that occurs when pathogens enter the body, multiply, and damage body cells
infection
pieces of genetic material surrounded by a protein coat
viruses
single-celled microorganisms
bacteria
a substance that kills cells or interferes with their functions
toxin
an organism, usually an arthropod, such as a tick, that carries and transmits pathogens to humans or other animals
vectors
a network of cells, tissues, organs, and chemicals that fights off pathogens
immune system
a reaction to tissue damage caused by injury or infection
inflammatory response
a white blood cell that attacks invading pathogens
phagocyte
a substance that is capable of triggering an immune response
antigen
the state of being protected against a particular disease
immunity
a specialized white blood cell that coordinates and performs many of the functions of specific immunity
lymphocyte
a protein that acts against a specific antigen
antibody
a preparation of dead or weakened pathogens that are introduced into the body to stimulate an immune response
vaccine
an infection of the lungs in which the air sacs fill with pus and other liquid
pneumonia
a yellowing of the skin and eyes
jaundice
a communicable disease whose incidence in humans has increased within the past two decades or threatens to increase in the near future
emerging infection
trigger the production of B cells and killer T cells
helper T cells
a cell that makes one type of antibody for a specific pathogen
B cells
a large phagocyte cell/ white blood cell that heals infections
macrophage
attack and destroy infected body cells
killer T cells
bacteria becoming immune to antibiotics
antibiotic resistance
