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MICR 270 Exam with Questions and 100% Verified Answers
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MICR 270 Exam with Questions and100% Verified Answers
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
,function of adaptive immune system - Answer differentiate between self and non
self. destroy non self. B and T lymphocytes, NK cells
most ancient structure of the immune system - Answer ambeocyte
Turned into the phagocyte
Phagocytes - Answer A type of white blood cell that ingests invading microbes
how phagocytes move - Answer pseudopodia
evolutionary heirarchy of lympoid tissues - Answer GALT-Thymus/spleen-Bone marrow-
Lymph nodes
Langerhans cells - Answer epidermal macrophages that help activate the immune
system
myeloid progenitor - Answer the stem cell in bone marrow that gives rise to the
myeloid lineage
Makes innate immune cells:
granulocytes(mast cell, basophil, eosinophil,neutrophil)
monocytes (macrophages)
Erythrocytes
Thrombocytes
Lymphoid progenitor gives rise to - Answer Adaptive immune cells:
B-cells(plasmocytes and memory b-cells)
, T-cells( Helper t-cell, cytotoxic t-cell, memory t-cell)
natural killer cells
You are only ___ % human - Answer 10%
commensal - Answer describes an organism that lives symbiotically with a host; this
host neither benefits nor suffers from the association
pathogenic - Answer microbes causing disease
adaptive system - Answer -specific: protects us against particular pathogens
-form the third (elite) line of defense
antibody - Answer A protein that acts against a specific antigen
Antigen - Answer A protein that, when introduced in the blood, triggers the
production of an antibody
antigen presentation - Answer The process by which an MHC molecule binds to a
fragment of an intracellular protein antigen and carries it to the cell surface, where it
is displayed and can be recognized by a T cell.
autoimmine - Answer immune system attacks its own body
Basophils - Answer A circulating leukocyte that produces histamine.
least common granulocyte
B cells - Answer produce antibodies; mature in the bone marrow
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