chapter 14: lymphatic and immune systems

lymphopoiesis

formation of lymph

interstitial fluid

found in the spaces between cells and becomes lymph when it enters lymph capillaries

platelets

not part of the immune system

bone marrow

not an area of lymph node concentration

atopy

hypersensitivity or allergic state

T cells

helper or suppressor cells

examples of immunoglobulins

IgA, IgG, IgE

tonsils

oropharyngeal lymph tissue

thymus

mediastinal T-cell producer

adenoids

nasopharyngeal lymph tissue

spleen

abdominal organ that filters erythrocytes and activates lymphocytes

bone marrow

produces lymphocytes and monocytes and all other blood cells

cytotoxic cells

T-cell lymphocytes

interferons and interleukins

antiviral proteins produced by T-cell lymphocytes

lymphocytosis

slight increase in numbers of lymphocytes

toxic

pertaining to poison

CT scan

computerized x-ray imaging in the transverse plane

HIV

virus that causes AIDS

hodgkin lymphoma

malignant tumor of lymph nodes

herpes simplex

viral infection causing blisters on skin of lips, nose, or genitals

kaposi sarcoma

cancer arising from the lining cells of capillaries, producing bluish red skin nodules

pneumocystic jiroveci pneumonia

major lung infection with fever, cough, chest pain, and sputum; treatment is with bactrim

toxoplasmosis

protozoal infection associated with AIDS; produces pneumonitis, hepatitis, and encephalitis

cryptococcosis

fungal infection associated with AIDS; involves brain and meninges, lungs, and skin