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Level 21

Module XIV Terms - Lymphatic and Immune Systems


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Western Blot
test to confirm HIV infection
pathogen
substance which causes an immune response
interstitial fluid
plasma that has exited the vascular system
lymph nodes
lumps of lymphatic tissue/collecting and filtration point
macrophage
cells located in lymph nodes which destroy foreign substances (phagocytosis)
spleen
filter foreign material from blood/stores blood/remove damages or old RBCs/activate lymphocytes that kill foreign substances
thymus gland
contains T lymphocytes (T cells)
leukocytes
lymphocytes/monocytes/granulocytes
lymphocytes
WBCs that defend body against disease and infection/made in bone marrow/T cells and B cells
cellular response
T cells produce chemicals (lymphokines) that destroy antigens
humoral response
production of antibodies
natural immunity
human body's natural resistance to diseases
acquired active immunity
body produces antibodies after exposure to disease
lymphokines
interferons and interleukins/produced by T cells/cell-mediated immunity
IgG
against bacteria, viruses, and toxins
IgA
immunoglobulin in breast milk, tears, nasal fluid, gastric juice.../transfers immunity from mother to infant
IgM
develops in blood plasma/specific response to antigens/first antibody produced after an infection
IgE
immunoglobulins involved in allergic reactions
Helper T cells
(CD4) stimulate immune response/activate B cells/attacked by HIV
Cytotoxic T cells
(CD8) help in the destruction of infected cells
Supressor T cells
suppress B cells or other immune cells
acquired passive immunity
antibodies or antitoxins developed in another organism
antitoxin
antibody directed against specific toxin
gamma globulin
preparation of antibodies given to prevent disease (Hep A, varicella, rabies)
antibody
specialized protein that fights disease (immunoglobulin)
lymphaden(o)
lymph nodes
lymphangi(o)
lymphatic vessels
AIDS
acquired immunodeficiency syndrome
ALL
acute lymphocytic leukemia
AML
acute myelogenous leukemia
CML
chronic myelogenous leukemia
CMV
cytomegalovirus
PCP
pneumocystis carinii pneumonia
EBV
Epstein-Barr virus
HSV
herpes simplex virus
lymphoid stem cells
become lymphocytes (B and T, natural killer cells)
myeloid progenitor
become granulocytes, mast cells, megakaryotes, and erythrocytes
neutrophils
granulocytes that engulf bacteria and cellular debris
lymphocytes
antibodies and immune response/B and T cells
eosinophils
kill parasites, allergic rxns (2%-3%)
monocytes
destroy large particles/phagocytosis (3%)
basophils
hypersensitivity/secrete heparin and histamine (1%)
tox(o)
poison (not toxic(o))
toxic(o)
poison (not tox(o))
Hodgkin's Lymphoma
lymph cancer/early adulthood/affects spleen
Non-Hodgkin's Lymphoma
lymph cancer/healthy looking cancerous cells diffuse pattern/middle to old age
hypersplenism
overactive and often large spleen
mononucleosis
EBV infection
sarcoidosis
inflammation with lesions involving lymph nodes, lungs, and other organs
lymphadenectomy
lymph node removal
lymphadenopathy
swollen lymphnodes
hypersensitivity
abnormally severe reaction to an allergen
splenectomy
removal of spleen
splenomegaly
big ass spleen