Lymphatic and Immune Systems Flashcards
(23 cards)
immun/o
protection
lymph/o
lymph
lymphaden/o
lymph node (gland)
splen/o
spleen
thym/o
thymus gland
tox/o
poison
ana-
again, anew
inter-
between
adaptive immunity
the ability to recognize and remember specific antigens and mount an attack on them. Humoral (B cells) and cell-mediated immunity (T cells) are examples
adenoids
mass of lymphatic tissue in the nasopharynx
antibody
protein produced by B cells to destroy antigens
antigen
Substance that the body recognizes as foreign; evokes an immune response. Most antigens are proteins or protein fragments found on the surface of bacteria, viruses, or organ transplant tissue cells
axillary nodes
lymph nodes in the armpit
B cell (lymphocyte)
lymphocyte that matures into a plasma cell to secrete antibodies. The B refers to the bursa of Fabricius, an organ in birds in which B ell differentiation and growth were first noted to occur.
cell-mediated immunity
t cells (cytotoxic, helper and suppressor) that respond to antigens and destroy them; a type of adaptive immunity
cervical nodes
lymph nodes in the neck region
complement system
proteins in the blood that help antibodies kill their target
cytokines
proteins secreted by cytotoxic T cells to aid in antigen destruction. Examples are interferons and interleukins
cytotoxic T cell
lymphocyte that directly kills antigens; called CD8-positive T cell
dendritic cell
antigen-presenting cell. Shows T and B cells what to attack
helper T cell
lymphocyte that aids B cells and stimulate T cells. Also called CD4-positve T cell
humoral immunity
B cells produce antibodies after exposure to specific antigens; type of adaptive immunity
immunity
body’s ability to resist foreign organisms and toxins that damage tissues and organs. This includes natural immunity and adaptive immunity. the word immunity comes from Latin immunis, meaning exempt or protected from
