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MICR 270 Study Questions to Guaranteed 100% Pass
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MICR 270 Study Questions toGuaranteed 100% Pass
Immune response - Answer the coordinated reaction of immune cells and microbes
antibody - Answer circulating protein which is made by a class of immune cells called
B cells in response to a specific antigen
antigen - Answer foreign protein that induces an immune response typically
including the production of antibodies
Lymphatic system - Answer a network of vessels that collects fluid that has
escaped from the capillaries and entered the surrounding tissues
lymph - Answer clear fluid that has leaked out of the capillary walls of the blood
vessels into the surrounding tissues called interstitial space
Lymphatic vessels - Answer pick up lymph, and carry it towards the heart where it
re-enters the circulatory system
lymph node - Answer filter the lymph and are filled with lymphocytes (a type of white
blood cells) specializing in antigen recognition
lymphoid - Answer adjective = components of the lymphatic system
,thymus - Answer where T cells mature
bone marrow - Answer where B cells mature
physical epithelial barriers - Answer - skin, respiratory tract, and gastrointestinal tract
- tight junctions between cells provide a physical barrier
- anti-microbial chemicals that are secreted inhibit microbe growth, preventing many
infections
phagocytic leukocytes - Answer - ingest microbes into vesicles and can
chemically destroy them
- secrete antimicrobial proteins called cytokines
dendritic cells - Answer phagocytes
link between adaptive and innate
express receptors that recognize general classes of microbes and make cytokines
APCs
NK cell - Answer detect infected cells and kill them via lysis
express receptors that bind to general classes of bacterial or viral antigens rather
than specific peptide sequences
complement system - Answer both innate and adaptive
, tightly regulated network of proteins (30+ glycoprotein macromolecules)
steps: opsonization, inflammatory response, cell lysis, clearance
opsonization - Answer process of coating a microbe's surface with a molecule
to enhance ingestion
generates complement proteins that bind to pathogens, targeting them for
destruction by phagocytes
inflammatory response - Answer second step of complement system
complement proteins bind to complement receptors to trigger an inflammatory
response
cell lysis - Answer third step of complement system
Final pieces of the complement proteins act to create pores in the membranes
of pathogens to cause them to burst
clearance - Answer final step of complement system
When an infection has subsided, the compliment system also helps clear old
immune cells and antigens from the site
cytokines - Answer group of small proteins
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