Chapter 14: Vocabulary Flashcards Preview

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Flashcards in Chapter 14: Vocabulary Deck (43):
1

adaptive immunity

ability to recognize and remember specific antigens and mount an attack
Example: humoral (B cell) & cell-mediated immunity (T cell)

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adenoids

mass of lymphatic tissue in the nasopharynx

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antibody

protein produced by B cells to destroy antigens

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antigen

substance that the body recognizes as foreign

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axillary nodes

lymph nodes in the armpit

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B cell (B lymphocyte)

lymphocyte that matures into a plasma cell to secrete antibodies

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cell-mediated immunity

T cells that respond to antigens and destroy them

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cervical nodes

lymph nodes in the neck region

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complement system

proteins in the blood that help antibodies kill their target

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cytokines

proteins secreted by cytotoxic T cells to aid in antigen destruction
example: interferons and interleukins

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cytotoxic T cell

lymphocyte that directly kills antigens; called CD8-positive T cell

12

dendritic cell

antigen-presenting cell. Shows T and B cells what to attack

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helper T cell

lymphocyte that aids B cells and stimulates T cells. also called CD4-positive T cell

14

humoral immunity

B cells produce antibodies after exposure to specific antigens; type of adaptive immunity

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immunity

body's ability to resist foreign organisms and toxins that damage tissues and organs

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immunoglobulins

antibodies such as IgA, IgE, IgG, IgM, and IgD; secreted by plasma cells in response to the presence of an antigen

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immunotherapy

use of immune cells, antibodies, or vaccines to treat or prevent disease

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inguinal nodes

lymph nodes in the groin region

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interferons

proteins that stimulate the growth of B and T lymphoctyes

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interstitial fluid

fluid in the spaces between cells. this fluid becomes lymph when it enters lymph capillaries

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lymph

thin, watery fluid found within lymphatic vessels and collected from tissues throughout the body

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lymph capillaries

tiniest lymphatic vessels

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lymphoid organs

lymph nodes, spleen, and thymus gland

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lymph node

collection of stationary solid lymphatic tissue along lymph vessels; contains cells (lymphocytes and macrophages) that fight infection

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lymph vessel

carrier of lymph throughout the body; lymphatic vessels empty lymph into veins in the upper part of the chest

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macrophage

large phagocyte found in lymph nodes and other tissues of the body

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mediastinal nodes

lymph nodes in the area between the lungs in the thoracic cavity

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mesentric nodes

lymph nodes in the mesentery (intestinal region)

29

monoclonal antibody

antibody produced in a laboratory to attack antigens and to destroy cells

30

natural immunity

protection that an individual is born with to find infection such as neutrophils, monocytes, macrophages, and NK cells. (natural killer cells) Is not antigen specific and does not elicit memory

31

paraaortic nodes

lymph nodes near the aorta in the lumbar area of the body

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plasma cell

lymphocyte that secretes antibodies. matures from B cells

33

right lymphatic duct

lymphatic vessel in the chest that drains lymph from the upper right part of the body

34

spleen

organ in the LUQ of the abdomen that destroys worn-out red blood cells, activates lymphocytes and stores blood

35

suppressor T cell

lymphocyte that inhibits the activity of B and T cells. also called Treg (regulatory T cell)

36

T cell (T lymphocyte)

lymphocyte that acts directly on antigens to destroy them or produce chemicals such as interferons and interleukins that are toxic to antigens

37

tolerance

the ability of T lymphocytes to recognize and accept the body's own antigens as "self" or friendly. once tolerance is established, immune system will not react against body

38

thoracic duct

large lymphatic vessel that drains lymph from the lower and left side of the body

39

thymus gland

lymphoid organ in the mediastinum that conditions T cells to react to foreign cells and aids in the immune response

40

tonsils

masses of lymphatic tissue in the back of the oropharynx

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toxin

poison; protein produced by certain bacteria, animals or plants

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vaccination

exposure to an antigen that provokes an immune response

43

vaccine

weakened or killed microorganisms, toxins, or other proteins given to induce immunity to infection or disease

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