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Ch. 20: The Lymphatic System

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created 1 year ago by Goldie2016
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updated 1 year ago by Goldie2016

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Lymph Node

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Lymph Node

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Capsule, Cortex, Medulla and Trabeculae of Lymph node

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Medullary Cords and Medullary Sinus of Lymph Node

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Lymph Follicle and Germinal Center of Lymph Node

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Palatine Tonsil

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Germinal Center, Tonsillar Crypt, and Lymphoid Noduled of Palatine Tonsil

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Lumen and Nodule of Appendix

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Germinal Center of Appendix

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Overview of the Spleen

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Red Pulp, White Pulp and central Artery of the spleen

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Splenic Cords and Splenic Sinusoids

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Spleen

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Thymus

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Reticular Cells and Thymic (Hassels's) Corpuscle of the Thymus

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Thymus

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Peyer's Patches of the Ileum

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Structure of a Lymph Node (p. 756 in text book)

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Figure 20.1 (p. 752 in text book)

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Figure 20.2 Lymphatic System (p. 753 in text book)

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Figure 20.2b (p. 753 in text book)

22

What promotes closure to the mini-valves associated with lymph capillaries?

Increasing pressure inside lymph capillary

23

___ are primary lymphoid organs.

Bone Marrow and Thymus

24

What areas are in a secondary lymphoid allow intimate contact between blood and the lymphocytes?

White Pulp of the Spleen

25

Where in the lymph node do the T- Cells first encounter antigens presented by dendritic cells?

Deep in the cortex

26

Collections of lymphoid tissues, called MALT (mucosa associated lymphoid tissue), are strategically placed throughout the respiratory, digestive and genitourinary system. Which one of these is located at the end of the Small Intestine?

Peyer's Patches

27

There is a decrease in our ability to fight infection as we age. Which lymphoid organ may have a role in this decline?

Thymus

28

Which of the following is NOT a pat of the lymphatic system?

A) lymphatic vessels

B) blood vessels

C) lymph nodes

D) lymph

B) blood vessels

29

Peyer's Patches are located ___.

wall of the small intestine

30

Small organs associated with lymphatic vessels are termed ___.

Lymph Nodes

31

The thymus is the only lymphoid organ that does not __.

directly fight antigens

32

T/F: Lymph Capillary permeability is due to mini-valves and protein filaments.

TRUE

33

Where are the lingual tonsils located?

Base of the tongue

34

T/F: When tissues are inflammed, lymphatic capillaries develop openings that permit uptake of large particles such as cell debris, pathogens and cancer cells.

TRUE

35

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

Right Lymphatic Duct

36

What structure delivers lymph into the junction of the internal Jugular vein and subclavian vein?

Thoracic Duct

37

Which lymphoid cells secrete antibodies?

Plasma Cells

38

Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a ___.

Tonsil

39

The thymus is most active during ___.

Childhood

40

T/F: Lymph arrives to the lymph nodes via efferent lymphatic vessels.

FALSE

41

What do collecting lymphatic vessels NOT share in common with veins of the cardiovascular system?

Thickness of the walls

42

The ___ are the most likely to become infected.

Palatine Tonsils

43

Once collected, lymph is returned to ___.

venous circulation

44

Which lymphoid organ provides a site for lymphocyte proliferation and immune surveillance and response and provides blood-cleansing functions?

Spleen

45

Antibodies that act against a particular foreign substance are released by __.

Plasma Cells

46

___ is not a normal component of lymph.

Red blood cells

47

Where are worn-out erythrocytes found in the spleen?

Red Pulp

48

Lymphatic vessels ____.

return tissue fluid to the bloodstream

49

The first lymphoid organ to appear during fetal development is the ___.

Thymus

50

Which lymphoid organ serves as the site where T-Lymphocytes become immunocompetent T-Cells?

Thymus Gland

51

___ tissue is predominantly reticular connective tissue.

Lymphoid

52

___ is NOT a lymphatic cell.

Eosinophil

53

Which is not a function of lymph nodes?

produce lymph fluid and cerebrospinal fluid

54

Lymph nodes are surrounded by a capsule from which connective tissue strands extend inward to divide the node into compartments. What is the name of these strands?

Trabeculae

55

Which tonsil is located in the posterior wall of the nasopharynx and is referred to as the adenoids if it is enlarged?

Pharyngeal Tonsil

56

Of the following lymphoid organs, which are structurally simplest and lack a complete capsule?

Tonsils

57

Lymph from what regions of the body are drained into the right lymphatic duct?

Right upper limb, right side of the head and thorax

58

___ is not a lymphoid organ or tissue.

Bone Marrow

59

Antibodies are produced by ___.

Plasma cells

60

Which of the following statements about the thymus is NOT true?

It has follicles similar to those of the spleen

61

What is the name of the enlarged sac to which the lumbar trunks and the intestinal trunk returns lymph?

Cisterna Chyli

62

Which of the following would not be classified as a lymphatic structure?

A) Tonsils

B) Spleen

C) Pancreas

D) Peyer's Patches

C) Pancreas

63

Which part of the spleen is the site of immune function?

White Pulp

64

What is the role of the mini-valves in lymph capillaries?

Increases permeability

65

Which of the following is NOT a part of MALT?

a) Tonsils

b) Lymph Nodes

c) Peyer's Patches

d) Appendix

b) Lymph Nodes

66

The lymphatic capillaries are ___.

more permeable than blood capillaries

67

Peyer's patches are found in the ___.

Ileum of the small intestine

68

Lymphatic collecting vessels are most closely associated with ___.

Capillary beds

69

Which of the following is not a part of the lymphatic system?

a) Erythrocytes

b) Lymph Nodes

c) Lymph

d) Lymphatic Vessels

a) Erythrocytes

70

Lymph capillaries are are absent in all except ___.

a) CNS

b) Digestive Organs

c) Bones and Teeth

d) Bone Marrow

b) digestive organs

71

Large clusters of lymph nodes occur in all of the following locations except ___.

lower extremities

72

___ returns lymph to the right lymphatic duct.

Right Jugular Trunk

73

T/F: The Cisterna Chyli collects lymph from the lumbar trunks, draining the upper limbs and from the intestinal trunk draining the digestive organs.

FALSE

74

Functions of the spleen include all of the following except ___.

a) storage of blood platelets

b) storage of iron

c) forming crypts that trap bacteria

d) removal of old or defective blood cells from the blood

c) forming crypts that trap bacteria

75

Lymph transport involves all but which of the following?

a) milking action of active muscle fibers

b) lymph capillary mini-valve action

c) thorax pressure changes during breathing

d) smooth muscle contraction in the lymph capillary walls

d) smooth muscle contraction in the lymph capillary walls

76

Which lymphoid organ serves in immune surveillance and in filtering lymph?

Lymph Nodes

77

Which of the following is a role of lymph nodes?

a) they produce lymph

b) the return lymph to circulation

c) they filter lymph

d) they produce red blood cells

c) they filter lymph

78

___ is NOT a function of the lymphatic system.

Transporting respiratory gases

79

___ lacks lymph capillaries.

Bones and teeth

80

___ are functions of lymphoid tissue.

Furnish an ideal surveillance vantage point for lymphocytes and macrophages

House and provide a proliferation site for lymphocytes

81

___ does not contain MALT tissue.

Thymus

82

Digestive tract associated lymphatic tissue includes all of the following except ___.

Islets of Langerhans

83

Which lymphoid organ is primarily active during the early years of life?

Thymus


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