Chapter 14: Need to Know Flashcards Preview

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Flashcards in Chapter 14: Need to Know Deck (54):
1

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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cervical nodes

lymph nodes in the neck region

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cytotoxic T cell

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

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helper T cell

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

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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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inguinal nodes

lymph nodes in the groin region

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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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mediastinal nodes

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

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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

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plasma cell

lymphocyte that secretes antibodies. matures from B cells

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right lymphatic duct

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

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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

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vaccination

exposure to an antigen that provokes an immune response

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immun/o

protections

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lymph/o

lymph

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lymphaden/o

lymph node (gland)

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splen/o

spleen

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thym/o

thymus gland

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tox/o

poison

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ana-

again, new

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inter-

between

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AIDS

acquired immunodeficiency syndrome

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HIV

human immunodeficiency virus--causes AIDS

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opportunistic infections

infectious diseases associated with AIDS; they occur because HIV infection lower the body's resistance and allows infection by bacteria and parasites that normally are easily contained

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crypto

cryptococcus--causes opportunistic AIDS-related infection

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CMV

cytomegalovirus--causes opportunistic AIDS-related infection

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PCP

Pneumocystis pneumonia--opportunistic AIDS-related infection

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Toxo

tocoplasmosis--parasitic infection associated with AIDS

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wasting syndrome

weight loss, decrease in muscular strength, appetite, and mental activity; associated with AIDS

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RTI

drugs that treats AIDS by blocking the production of protease, a proteolytic enzyme that helps create new viral pieces for HIV

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PI

drug that treats AIDS by blocking the production of protease, a proteolytic enzyme that helps create new viral pieces for HIV

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HAART

highly active antiretroviral therapy--use of combinations of drugs that are effective against AIDS

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allergy

abnormal hypersensitivity acquired by exposure to an antigen

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all/o

other

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lymphoma

malignant tumour of lymph nodes and lymph tissue

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multiple myeloma

malignant tumour of bone marrow cells

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thymoma

malignant tumour of the thymus gland

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anaphylaxis

exaggerated or unusual hypersensitivity to foreign protein or other substance

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CD4+ cells

Helper T cells that carry the CD4 protein antigen on their surface. HIV binds to CD4 and infects and kills T cells bearing this protein. AIDS patients have an inadequate number of CD4+ cells

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ELISA

enzyme-linked immunosorbent assay--test to detect anti-HIV anitbodies

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immunoelectrophoresis

test that separates immunoglobulins (IgM, IgG, IgE, IgA, igD)

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viral load test

x-ray imaging produces cross-sectional and other views of anatomic structures

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KS

Kaposi sarcoma

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HSV

herpes simplex virus

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Histo

histoplasmosis--fungal infection seen in AIDS patients

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