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Flashcards in Chapter 22 Deck (50):
1

1) What are the functions of the lymphatic system?

A B and C are correct

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2) What makes up the lymphatic system?

not yellow bone marrow

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3) What are lymphatic vessels?

resemble thin walled veins with extra valves in structure

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4) What makes up lymph?

nearly identical to interstitial fluid in most parts of the body, formation helps return to fluid and plasma proteins that leaked from capillaries to the blood A+B

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5) What does the thymus gland do?

contains many immature t cells in its cortex

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6) Where are lymph nodes found?

occur in superficial and deep groups along the lymphatic vessels

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7) What is the spleen and how does it function?

contains white pulp which sonsists mainly of lymphocytes and macrophages; contains red pulp which performs functions related to blood cells, A and B are correct (D)

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8) What are lymphatic nodules ?

include the tonsils and peyers patches

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9) What do all nonspecific defenses have in common?

all are correct

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10) What is the first line of defense against pathogens?

the skin and mucous membranes

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11) What are the antimicrobial proteins found in the blood and interstitial fluid?

A B and C are correct

12

12) Which substance prevents viral replication?

interferon

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13) What are the phagocytes?

not lymphocyte

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14) What is inflammation?

is a tissue reponse to injury, is characterized by redness, swelling, heat and pain. A + B

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15) What is the first stage of the inflammation response?

vasodialiation

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16) How does immunity differ from nonspecific defenses?

A B and C are correct

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17) Why can the body recognize so many different antigens?

the genes for antigen recepetors can be recombined to form may different recepter proetins

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18) What are MHC antigens?

A B and C are correct

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19) What are true of antibodies?

not they are produced by t cells

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20) How do antibodies disable antigens?

A B and C are correct

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21) What is the antibody that can cross the placenta and is the most abundant antibody produced?

IgG

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22) What is complement and what does it do?

is a series of proteins that asist in fighting infections and is associagted with phagocytosis, cytolysis, and inflammation A + B are correct

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23) What is immunological memory?

All are correct

24

24) What is negative selection?

leads to devleopment of self tolerance

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25) What are the antigen presenting cells (APCs)?

B cells, dendritic cells, memory b cells (D)

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26) Which cells are involved in antibody-mediated immunity?

B cells, plasma cells, memory B cells (D)

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27) How does increased stress impact immunity?

by depresssing cortisol levels

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28) What causes AIDS and how can it be transmitted?

A, B, and C are correct

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29) What effect does AIDS have on the body and what do AIDS testing measure?

NOT current widely used diagnostic test for AIDS detect HIV particles in the blood

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30) What causes Type II reactions?

reactons from igG and igM antibodies reacting in the blood cells

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31) Loss of self-tolerance, or autoimmunity, is associated with what diseases?

All are correct

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32) What does infectious mononucleosis do to B cells?

makes b cells look more like monocytes

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33) What are lymphomas?

cancers of the lymph nodes and other lymphatic organs, including non-hodgkin lymphoma

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34) What fluid nearly identical to interstitial fluid?

lymph

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35) What is the fatty fluid absorbed into lymphatic system from small intestine called?

chyle

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36) Where do stem cells become immunocompetent?

primary lymphatic organs

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37) Where is the largest mass of lymphatic tissue in the body?

spleen

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38) Where do T cells become immunocompetent?

thymus

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39) What are the dispersed lymphatic nodules associated with mucous membranes?

MALT

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40) What are the substance secreted by NK cellsand damages pathogen’s cell membrane?

perforin

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41) What contains H2O2, OCL-, and O2-; and is the actual site of pathogen destruction in phagocyte?

phagoloysosome

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42) What is the process whereby phagocytes find their way to the site of infection or inflammation?

chemotaxis

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43) What antigen possesses both immunogenicity and reactivity?

complete antigen

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44) What is the multiplication of cells called?

proliferation

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45) What is found in sweat, tears, saliva, mucus, breast milk and gastrointestinal secretions?

IgA

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46) What is the 1st antibody class to be secreted by plasma cells after the 1st exposure to antigen?

IgM

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47) What antibodies are involved in allergic and hypersensitivity reactions?

IgE

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48) What is the condition when IgE binds to mast cells and basophils; allergen binding to IgE triggers release of vasodilators?

anaphlyactic reactions

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49) What is hypersensitivity reaction associated with hemolytic disease of the newborn called?

cytotoxic reaction

50

50) What results from lack of self-tolerance, and is more common with aging?

autoimmunity