Chap 14, Lymphatic and Immune Systems, Study Section Flashcards

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1
Q

allergen

A

Substance capable of causing a specific hypersensitivity reaction in the body; a type of antigen.

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2
Q

anaphylaxis

A

Exaggerated or unusual hypersensitivity to foreign protein or other substance.

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3
Q

atopy

A

Hypersensitive or allergic state involving an inherited predisposition.

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4
Q

CD4+ cells

A

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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5
Q

Hodgkin disease

A

Malignant tumor of lymphoid tissue in spleen and lymph nodes; Reed-Sternberg cell often is found on microscopic analysis.

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6
Q

human immunodeficiency virus (HIV)

A

Virus (retrovirus) that causes AIDS.

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7
Q

Kaposi sarcoma

A

Malignant lesion associated with AIDS; arises from the lining of capillaries and appears as red, purple, brown, or black skin nodules.

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8
Q

non-Hodgkin lymphomas

A

Group of malignant tumors involving lymphoid tissue. Examples are follicular lymphoma and large cell lymphoma.

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9
Q

opportunistic infections

A

Infectious disease associated with AIDS; they occur because HIV infection lowers the body’s resistance and allows infection by bacteria and parasites that normally are easily contained.

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10
Q

protease inhibitor

A

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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11
Q

reverse transcriptase inhibitor (RTI)

A

Drug that treats AIDS by blocking reverse transcriptase, an enzyme needed to make copies of HIV.

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12
Q

wasting syndrome

A

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

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