Flashcards in Chapter 12 Immunology Deck (73)
The term "attenuated" is often used in immunology. What best describes its meaning?
According to the work of Jenner and Pasteur, prior exposure to microorganisms leads to protective immunity.
Which scientists are associated with the development of the basic concepts of immunology?
Jenner and Pasteur
The study of the body's response when it is exposed to foreign substances
Each antibody can bind to several different kinds of antigens.
What best describes "immune response"?
The body's reaction against invading foreign substances
IgG can cross the placenta to provide some immunity to newborn animals in their first few weeks of life.
Different types of immune system cells produce different antibodies when exposed to the same antigen
Acquired immunity is also called:
In the recognition step of the acquired immune response, the antigen is called the BLANK molecule
What immune system cells secrete antibodies?
What is the first class of immunoglobulins to be synthesized by a fetus or newborn in response to an antigen?
T lymphocytes are the major cell type associated with cell-mediated immunity.
The innate immune response only develops in response to a specific antigen.
The most important role of the immune system is to keep foreign substances from entering the blood circulation.
Antibiotics accelerate the response of the immune system.
An animal's innate immune system is functional even if the animal has not been exposed to a foreign substance.
What cells are the first to recognize the presence of bacterial antigens and release chemical signals to immune cells in other locations?
T lymphocytes are also called T cells.
What cellular component plays a role in the body's ability to recognize substances as "nonself"?
Proteins of the major histocompatibility complex.
MHC proteins help T lymphocytes recognize and attach to antigens.
An individual's innate resistance to foreign substances remains the same throughout his/her life.
Nutrition can affect the strength of an individual's innate resistance.
What enzyme can be found in tears, saliva, and nasal secreations and destroys bacteria?
The same MHC proteins are found in all the animals of the same species, but different MHC proteins are present in animals of different species.
The acquired immune system only develops an immune response after an antigen has entered the body.
Fluids from tissues are transported by the circulatory system and recycled by the lymphatic system.
False: transported by lymphatic system and recycled by the circulatory system
What is the predominant type of immunoglobulins found in the saliva of mammals?
Antibodies are made up of heavy and light chains.