Chapter 12 Immunology Flashcards Preview

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Flashcards in Chapter 12 Immunology Deck (73)
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1

The term "attenuated" is often used in immunology. What best describes its meaning?

Weakened

2

According to the work of Jenner and Pasteur, prior exposure to microorganisms leads to protective immunity.

True

3

Which scientists are associated with the development of the basic concepts of immunology?

Jenner and Pasteur

4

Immunology is:

The study of the body's response when it is exposed to foreign substances

5

Each antibody can bind to several different kinds of antigens.

False

6

What best describes "immune response"?

The body's reaction against invading foreign substances

7

IgG can cross the placenta to provide some immunity to newborn animals in their first few weeks of life.

True

8

Different types of immune system cells produce different antibodies when exposed to the same antigen

True

9

Acquired immunity is also called:

adaptive immunity

10

In the recognition step of the acquired immune response, the antigen is called the BLANK molecule

signal

11

What immune system cells secrete antibodies?

B cells

12

What is the first class of immunoglobulins to be synthesized by a fetus or newborn in response to an antigen?

IgM

13

T lymphocytes are the major cell type associated with cell-mediated immunity.

True

14

The innate immune response only develops in response to a specific antigen.

False

15

The most important role of the immune system is to keep foreign substances from entering the blood circulation.

False

16

Antibiotics accelerate the response of the immune system.

True

17

An animal's innate immune system is functional even if the animal has not been exposed to a foreign substance.

True

18

What cells are the first to recognize the presence of bacterial antigens and release chemical signals to immune cells in other locations?

Phagocytes

19

T lymphocytes are also called T cells.

True

20

What cellular component plays a role in the body's ability to recognize substances as "nonself"?

Proteins of the major histocompatibility complex.

21

MHC proteins help T lymphocytes recognize and attach to antigens.

True

22

An individual's innate resistance to foreign substances remains the same throughout his/her life.

False

23

Nutrition can affect the strength of an individual's innate resistance.

True

24

What enzyme can be found in tears, saliva, and nasal secreations and destroys bacteria?

Lysozyme

25

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.

False

26

The acquired immune system only develops an immune response after an antigen has entered the body.

True

27

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

28

What is the predominant type of immunoglobulins found in the saliva of mammals?

IgA

29

Antibodies are made up of heavy and light chains.

True

30

What is the method by which an animal can be given passive immunity?

By giving the animals preformed antibodies