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36 Cards in this Set

  • Front
  • Back
Masses of lymph tissue in the back of the oropharynx.
suppresor cells
T-cell lymphocytes that inhibit the activity of B and T-cell lymphocytes.
right lymphatic duct
A large lymph vessel in the chest that receives lymph from the upper right part of the body.
An organ near the stomach that produces, stores, and eliminates blood cells.
dendritic cells
Antigen-presenting cells derived from monocytes.
thoracic duct
Large lymph vessel in the chest that receives lymph from below the diaphragm and from the left side of the body above the diaphragm; it empties the lymph into veins in the upper chest.
T cells
Lymphocytes formed in the thymus gland; they act directly on antigens to destroy them or produce chemicals such as interferons and interleukins that are toxic to antigens.
thymus gland
Organ in the mediastinum that produces T-cell lymphocytes and aids in the immune response.
Introduction of altered antigens (viruses or bacteria) to produce an immune response and protection against disease.
A poison; a protein produced by certain bacteria, animals, and plants.
cell-mediated immunity
An immune response involving T-cell lymphocytes; antigens are destroyed by direct action of cells.
plasma cell
A cell that secretes an antibody and originates from B-cell lymphocytes.
B cells
Lymphocytes that transform into plasma cells and secrete antibodies.
axillary nodes
Lymph nodes in the armpit.
acquired immunity
Formation of antibodies and lymphocytes after exposure to an antigen.
Masses of lymph tissue in the nasopharynx.
Proteins, produced by plasma cells, that destroy antigens.
humoral immunity
Immune response in which B cells transform into plasma cells and secrete antibodies.
lymph capillaries
The tiniest lymphatic vessels.
cervical nodes
Lymph nodes in the neck region.
helper cells
T cell that aid B cells in recognizing antigens and stimulating antibody production; also called T4 cells.
cytotoxic cells
T-cell lymphocytes that directly kill foreign cells; also called T8 cells.
immune response or immunity
The body's capacity to resist all types of organisms and toxins that can damage tissue and organs.
Antibodies (gamma globulins that are secreted by plasma cells in humoral immunity.
Fluid found within lymphatic vessels and collected from tissues throughout the body.
inguinal nodes
Lymph nodes in the groin region.
Proteins that stimulate the growth of B or T-cell lymphocytes and activate specific components of the immune response.
interstitial fluid
Fluid in the spaces between cells. This fluid becomes lymph when it enters lymph capillaries.
Antiviral proteins secreted by T cells; they also stimulate macrophages to ingest bacteria.
A large phagocyte found in lymph nodes and other tissues of the body.
lymph vessels
Carriers of lymph throughout the body; lymph vessels empty lymph into veins in the upper part of the chest.
lymph nodes
Stationary lymph tissue along lymph vessels.
natural killer (NK) cells
Cells of lymphocyte origin that have the ability to recognize and destroy foreign cells (viruses and tumor cells) without prior sensitization.
lymphoid organs
Lymph nodes, spleen, and thymus gland.
mediastinal nodes
Lymph nodes in the area between the lungs in the thoracic (chest) cavity.
natural immunity
A person's own genetic ability to fight off disease.