MICR 270 Exam with Questions and 100% Verified Answers
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MICR 270
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MICR 270
Major Histocompatibility Complex (MHC) - Answer Group of genes that code for
proteins found on the surfaces of cells that help the immune system recognize foreign
substances.
memory cells - Answer General term for lymphocytes that are responsible for
immunological memory and protective immunity...
MICR 270 Exam with Questions and 100%
Verified Answers
Major Histocompatibility Complex (MHC) - Answer Group of genes that code for
proteins found on the surfaces of cells that help the immune system recognize foreign
substances.
memory cells - Answer General term for lymphocytes that are responsible for
immunological memory and protective immunity.
Monocytes - Answer An agranular leukocyte that is able to migrate into tissues and
transform into a macrophage.
Macrophages - Answer Found within the lymph nodes, they are phagocytes that destroy
bacteria, cancer cells, and other foreign matter in the lymphatic stream.
-presents antigens to t cells
-participates w tissue repair
natural killer cells - Answer A type of white blood cell that can kill tumor cells and virus-
infected cells; an important component of innate immunity
has granzymes and perforin
Neutrophils - Answer -phagocytic and granulocyte characteristics, most abundant
immune cell
-Called by macrophages
-lifespan of 1-3 days
,-leukeocyte
Pattern Recognition Receptors (PRRs) - Answer proteins on or in cells that recognize
specific compounds unique to microbes or tissue damage, allowing the cells to sense the
presence of invading microbes or damage
Pathogen-associated molecular patterns (PAMPs) - Answer Molecules associated with
groups of pathogens that are recognized by cells of the innate immune system.
Phagocytosis - Answer "Cell eating"; an endocytic pathway by which a cell engulfs
particles such as microbes or cellular debris.
plasmocytes - Answer produce antibodies
-activated b cells which caqn generate memory cells
spleen - Answer Organ near the stomach that produces, stores, and eliminates blood
cells
T cells - Answer Cells created in the thymus that produce substances that attack infected
cells in the body.
Thymus - Answer Gland in the thoracic cavity above the heart where T lymphocytes
mature.
Toll-like receptors - Answer each recognize a specific "danger" molecule AND are
embedded in cellular membranes.
vaccination - Answer injection of a weakened or mild form of a pathogen to produce
immunity
, Functions of the immune system - Answer To Discriminate and Eliminate
Dysfunctions of the immune system - Answer hypersensitivity reactions, autoimmune
disease, immunodeficiency
Organization of the Immune System - Answer Lymphatic system, circulatory system and
immune system
lymphoid organs and tissues - Answer bone marrow, lymph nodes, MALT, spleen,
thymus
primary lymphoid organs - Answer bone marrow and thymus
secondary lymphoid organs - Answer spleen and lymph nodes
function of primary lymphoid organs - Answer site of lymphocyte maturation to an
immunocompetent cell
Function of secondary lymphoid organs - Answer site of lymphocyte activation into an
effector cell
Peyer's patches - Answer large collections of lymphoid tissue found in the submucosa of
the small intestine
Functions of innate immune system - Answer Prevention of microbe colonization
Prevention of microbe entry
Prevention of microbe spread
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