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BIO173 > Chapter 22- Lymphatic System > Flashcards

Chapter 22- Lymphatic System Flashcards

1
Q

lymphatic vessels carry what

A

lymph - many RBCs, no color, few nutrients

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2
Q

lymphoid organs

A

spleen, lymph nodes, RBM, thymus

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3
Q

functions of lymphatic system

A
  1. return excess fluid to heart
  2. absorb lipids in small intestine and send them to cardiovascular system
  3. respond to antigens with specific immunity
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4
Q

b cells

A

mature in RBM, humoral immunity

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5
Q

t cells

A

mature in thymus, cellular immunity

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6
Q

edema

A

fluid accumulation in a body part

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7
Q

lacteal

A

a specialized lymphatic capillary

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8
Q

chyte

A

lymph in the lacteal of the small intestine

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9
Q

lymph flow beginning at lymphatic capillaries in tissues

A

lymphatic capillaries in tissues -> lymphatic vessels -> thoracic/right lymphatic duct -> subclavian veins -> superior vena cava

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10
Q

type of cell in the thymus

A

lymphocytes that mature into T cells

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11
Q

types of cells in lymph nodes

A

B lymphocytes, macrophages, follicular dendritic cells, plasma cells

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12
Q

types of cells in the spleen

A

lymphocytes, macrophages, plasma, granulocytes, RBCs

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13
Q

examples of lymphatic nodules in the body

A

tonsils, Peyer’s patches, MALT

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14
Q

1st line of immunity defense

A

barrier to entry and biological processes (intact skin, urination, lacrimation, resident flora)

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15
Q

2nd line of immunity defense

A

inflammation (histamine released by tissue cells/WBCs, active phagocytosis)

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16
Q

3rd line of immunity defense

A

specific immunity (T lymphocytes produce immune active cells, B cells produce antibodies)

17
Q

MHC

A

the cell “marker” NOT on RBCs

18
Q

pyrogens

A

inhibits growth of certain pathogens, increased immunity, reduce availability of iron, increased temperature

19
Q

interferons

A

protein molecules produced by viruses, inhibit cancer growth

20
Q

complement system

A

composed of 20 or more protein components existing in blood in inactive form, activated by pathogens, inflammatory factors to assist in immunity

21
Q

IgG

A

main antibody in circulation, can cross placenta, blood

22
Q

IgM

A

first and largest antibody “macro”

23
Q

IgA

A

antibody found in secretions like breast milk and saliva

24
Q

IgE

A

antibody involved in allergic reactions

25
Q

IgD

A

receptors on B cells

26
Q

T helper cells

A

assist specific immunity

27
Q

T suppressor cells

A

regulate immune reactions

28
Q

cytotoxic cells

A

lyse cells bearing foreign antigen

29
Q

delayed hypersensitivity cells

A

delayed allergic reaction

30
Q

memory cells

A

remember immune response

31
Q

natural active immunity

A

infection

32
Q

natural passive immunity

A

mother to child

33
Q

artificial active immunity

A

vaccination

34
Q

artificial passive immunity

A

immunotherapy

BIO173 (12 decks)

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