Chapter 12 Immunology Flashcards Preview

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Flashcards in Chapter 12 Immunology Deck (73)
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31

During which phase of a primary immune response do the antibodies become detectable in the serum?

The log phase

32

Why are adjuvants used in vaccines?

To enhance the immune response

33

Immunization is a process by which an animal develops immunity after having been exposed to an antigen.

True

34

During the plateau phase of a primary immune response, the antibody titer for the pathogen of interest:

reaches its peak

35

A secondary immune response to a given antigen is generally a weaker response than the primary response to the initial exposure.

False

36

Stress can cause temporary immunodeficiencies.

True

37

What best describes autoimmune disease?

The animal's immune system reacts against the animal's own constituents.

38

What organ does the nude mouse lack?

Thymus

39

All diseases that affect the immune system cause a decreased immune response.

False

40

Why is cyclosporin A often used in indviduals who have received tissue transplants?

It is an immunosuppressant drug

41

In AIDS, the HIV virus destroys which of the cells involved in the immune response?

T helper cells and macrophages

42

Drug therapy with corticosteroids can lead to secondary immunodeficiency disease.

True

43

Simian immunodeficiency virus (SIV) is an immunodeficiecny virus that affects animals belonging to which group?

Nonhuman primates

44

A primary immunodeficiency disease is an acquired condition resulting from an infection or a side effect of a drug treatment.

False

45

Asthma is always caused by an allergic reaction affecting the respiratory track.

False

46

Because they lack a thymus, nude mice lack what component of the immune system?

T cells

47

What is another term used to describe immunodeficient individuals?

Immunocompromised

48

An autoimmune disease is the result of the individual's immune system becoming hypersensitive to some allergen in the environment.

False

49

When a defect in immune response is inherited, it is referred to as a primary immunodeficiency disease.

True

50

What best describes immunosupression?

A lowered immune responsiveness

51

Asthma is always caused by an allergic reaction affecting the respiratory track.

False

52

In general, autoimmune diseases target all organs of the body.

False

53

The transplantation of a pig heart valve into a human is an example of what type of transplant?

Xenograft

54

The BLANK of donor and recipient is a major determinant of success of an organ transplant.

histocompatibility

55

What term would you use to describe a graft that is transplanted between individuals of the same species?

Allograft

56

What immune system cells secrete antibodies?

B Cells

57

What is typical of a secondary(anamnestic) immune response?

The serum titer rises to a higher level during the primary response

58

B cells and plasma cells are part of the BLANK -mediated immune response.

antibody

59

What is another term for macrophages?

antigen-presenting cells

60

What component of the innate immune system coats the surface of invading organisms to facilitate their attack by the macrophages?

complement proteins