Chapter 22 Lymphatic System Flashcards Preview

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Flashcards in Chapter 22 Lymphatic System Deck (99)
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61

What is a small hormone that can stimulate or inhibit many normal cell functions?

Cytokine

62

Which type of adaptive immunity will result from intravenous injection of immunoglobulins?

Artificially acquired passive immunity

63

Which type of adaptive immunity will result from mother-to-baby IgA transfer via breast feeding?

Naturally acquired passive immunity

64

Which cells increase the permeability of blood vessels by releasing histamine?

Mast Cells

65

Which immunoglobulin is a pentamer?

IgM

66

Antigens that induce an allergic reaction are called

Allergen

67

Which cell is considered to be the most important cell in the immune system?

T Helper Cells

68

The thymus develops from the

Third Pharyngeal Pouch

69

What negatively affects the immune system?

Smoking, lack of sleep, sedentary lifestyle, and stress.

70

True or False: Lymphatic vessels drain excess interstitial fluid from connective tissues.

True

71

The antibody molecule is held together by ________ bonds.

Disulfide

72

Large clusters of lymph nodes occur in which regions?

Near the mammary glands and in the axillae and groin.

73

True or False: The lymphatic capillaries function to absorb the excess protein-containing interstitial fluid and return it to the bloodstream.

True

74

True or False: The cisterna chyli collects lymph from the lumbar trunks draining the upper limbs and from the intestinal trunk draining the digestive organs.

False

75

What are the digestive-tract associated lymphatic tissues?

Peyer's patches, appendix, and tonsils.

76

Both lymph and venous blood flow are heavily dependent on ________.

Skeletal muscle contractions and differences in thoracic pressures due to respiratory movement

77

Small organs associated with lymphatic vessels are termed ________.

Lymph Nodes

78

True or False: NK cells are a type of neutrophil.

False

79

Which cells become immunocompetent due to thymic hormones?

Lymphocytes

80

What is the correct sequence of events in phagocytosis?

Chemotaxis, adherence, ingestion, digestion, killing

81

True or False: When tissues are inflamed, lymphatic capillaries develop openings that permit uptake of large particles such as cell debris, pathogens, and cancer cells.

true

82

In clonal selection of B cells, which substance is responsible for determining which cells will eventually become cloned?

Antigen

83

The thymus is most active during ________.

Childhood

84

The primary immune response has a large lag due to what?

While B cells proliferate and differentiate into plasma cells.

85

Lymph capillaries are absent in which tissues?

Avascular tissues (cartilage, epidermis, cornea of the eye), the central nervous system, portions of the spleen, and red bone marrow.

86

True or False: The causative agent in acquired immune deficiency syndrome (AIDS) is a virus that recognizes CD4 proteins.

True

87

True or False: Antigens only come from microbes.

False

88

True or False: Type II Diabetes is an autoimmune disease.

False

89

Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax?

Right Lymphatic Duct

90

Innate immune system defenses include ________.

Physical factors, chemical factors, antimicrobial substances, natural killer cells, phagocytes, inflammation, and fever.