Shared Flashcard Set

Details

Exam 1 Flashcards from Professor
Exam 1 Flashcards from Professor
153
Biology
Undergraduate 3
11/25/2014

Additional Biology Flashcards

 


 

Cards

Term
What cells are the class I MHC molecules found on?
Definition
All nucleated cells
Term
Where are the T lymphoctes and B lymphocytes found in speen?
Definition
In the PALS area;
T = central area
B = follicles
Term
What is the normal range for B cells and Natural Killer cells in peripheral blood?
Definition
10-15%
Term
Cytokine names include interleukin, interferon, _______, ______, and ________
Definition
Chemokine
Tumor necrosis factor
Hematopoietic growth factors
Term
Cytokine; stimulates and regulates WBC movement from blood to tissue
Definition
Chemokines
Term
Where does the antigen-independent lymphopoiesis occur?
Definition
Bone Marrow
Term
Cytokine that acts on cell that produces it
Definition
Autocrine
Term
What is the function of PMN cells?
Definition
Phagocyte
Term
Genes inherited as a set (A, B, C, DR, DP, & DQ)
Definition
Haplotype
Term
Protein antigen- allows the T cell to help the B cell produce memory cells, switch antibody classes, and increase affinity for antigen
Definition
T-dependent g
Term
Instrument (flow cytometer) setting that allows analysis of a particular set of cells
Definition
Gate
Term
What are the NK cells killing methods?
Definition
ABY-Independent cell cytotoxicity and ABY-Dependent cell cytotoxicity
Term
What are the human MHC Antigens called?
Definition
Human leukocyte antigens
Term
Cell-surface molecules that are designed by CD nomenclature
Definition
Cluster of differentiation; referred to as CD marker or CD antigen
Term
What is the process by which certain WBCs engulf and kill invaders?
Definition
Phagocytosis
Term
Which antibody is present in the immature B cell stage?
Definition
IgM
Term
What is the T cell dependent antigen?
Definition
Protein
Term
What is the function of follicular dendritic cells?
Definition
Involved in selection of B memory cells
Term
Where are follicular dendritic cells located?
Definition
Located in spleen and lymph nodes
Term
What is the principle of PCR
Definition
Amplify a particular DNA sequence using template DNA, DNA polymerase, etc.
Term
What area on chromosome 6 codes for class I MHC proteins?
Definition
A, B, & C
Term
What are the characteristics of the secondary immune response?
Definition
Short Lag phase
Primarily production of IgG (due to memory cells)
Term
What type of immunity is generally produced by vaccines?
Definition
Primarily humoral immunity
Term
Process of cell's self destruction (suicide)
Definition
Apoptosis
Term
Molecule that transports antigen to cell surface for presentation to CD4 T cells
Definition
Class II MHC molecules
Term
Substance that stimulates the proliferation of many different clones of lymphocytes; for example, concanavalin A activates T cells and lipopolysaccharide activates B cells
Definition
Mitogen
Term
Migration of cells along a concentration gradient of an attractant, such as bacteria protein & complement components
Definition
Chemotaxis
Term
Different forms of gene (As, A1, A10, etc.)
Definition
Alleles
Term
What is the principle of the cell sorter (fluorescence-activated cell sorter or FACS)?
Definition
Identifies cells of interest using + & - charges
Term
What is the function of the red pulp in the spleen?
Definition
Filters RBCs
Term
Surface proteins transmit signal to activate T (such as CD3) & B cells
Definition
Transduction
Term
What CD marker is used to identify T helper cells?
Definition
CD4
Term
Substance which binds with antibody or sensitized cells but may not be able to evoke an immune response
Definition
Antigen
Term
What is the function of the plasma cell?
Definition
Produce antibodies
Term
What type of immunity is generated by the individual through vaccination or infection & provides long-term protection?
Definition
Active immunity
Term
What is the function of basophils?
Definition
Important in hypersensitivity (allergies) reactions
Term
What are the functions of interferon?
Definition
Interfere with viral replication; activate macrophages
Term
What is the normal range for CD4 cells in peripheral blood?
Definition
45-55%
Term
Where is the cutaneous associated lymphoid tissue located?
Definition
Under skin epithelia
Term
Resistance to infection
Definition
Immunity
Term
Glycoprotein made in response to immunogen
Definition
Antibody (immunoglobulin)
Term
What is the function of T helper cell?
Definition
Produce cytokines that regulate humoral & cell-mediated immunity
Term
What type of antigen is from a particular species and capable of eliciting an immune response in a different species?
Definition
Heteroantigen/heterophile
Term
What are the advantages of T-cell dependent antigen?
Definition
Protein antigen stimulates class switching, affinity maturation, & memory cells
Term
Where does antigen-dependent lymphopoiesis occur?
Definition
Secondary lymphoid tissues
Term
Cytokine that acts on a nearby cell
Definition
Paracrine
Term
Antibody binding site; single antigen site
Definition
Epitope
Term
Which cell markers are lacking in the double-negative T cell maturation stage?
Definition
CD4 & CD8
Term
Which event is missing from following phagocytic sequence:
physical contact
phagosome formation
release of debris (exocytosis)
Definition
Phagolysosome formation
Term
What is the correct order for the inflammation process:
a. Increase in capillary permeability
b. Migration of macrophages to the injured area
c. Increase in blood supply to the affected area
d. Migration of neutrophils to the injured area
Definition
C, A, D, B
Term
What are the characteristics of natural immunity?
Definition
Rapid response, nonspecific response, & no memory capability
Term
Small molecule that is nonimmunogenic unless complexed with a larger carrier
Definition
Haptens
Term
What are acute phase reactants?
Definition
Normal serum proteins
Term
What is the function of class II MHC molecules?
Definition
Present antigen to CD4 T helper cells
Term
Molecule that transport antigen to cell surface for presentation to CD8 T cells
Definition
Class I MHC molecules
Term
What is the function of cytotoxic T cells?
Definition
Kill infected (microbes) & cancerous cells
Term
What are the primary lymphoid tissues?
Definition
Bone marrow & thymus
Term
Cytokine
Definition
Interleukin
Term
What is the function of eosinophils?
Definition
Associated with parasitic infections & allergies
Term
Identify the correct order and stages of B maturation?
Definition
Pro-B, pre-B, immature, & mature
Term
Study of noncellular components in the blood (antigens & antibodies)
Definition
Serology
Term
Give two examples of opsonins.
Definition
C3b & IgG
Term
What is the function of hematopoietic growth factors?
Definition
Stimulate the proliferation & differentiation of blood cells
Term
What are the characteristics of the primary immune response?
Definition
Long lag phase & primary production of IgM
Term
What is generally the source of superantigen?
Definition
Antigen is typically bacterial protein
Term
What do the TCR and BCR recognized and bind to?
Definition
Antigen
Term
Humoral immunity is mediated by ____________ that are produced by ____ _____ for the purpose of eliminating extracellular pathogens.
Definition
Antibodies
B lymphocytes
Term
What is the function of dendritic cells?
Definition
Phagocytic cells found in the tissue; APC
Term
Locus on chromosome that encodes for peptide-binding molecule
Definition
Major histocompatibility complex (MHC)
Term
What type of immunity is the result of prior experience with an antigen?
Definition
Acquired (adaptive, specific) immunity
Term
What is the principle of the nucleic acid probe?
Definition
Uses DNA or RNA for detection of particular MO or group of MOs
Term
True or False--Positive selection in the T cell maturation includes two processes. The creation of T cells that recognize self MHC molecules and cells that are either CD4 or CD8 (cells with class I or II MHC restrictions).
Definition
True
Term
Cytokine that acts on distance cell
Definition
Endocrine
Term
What is the function of class I MHC molecules?
Definition
Present antigen to CD8 cytoxtoxic T cells
Term
What type of immunity is received from someone else & provides short-term protection?
Definition
Passive immunity
Term
Cytokine that mediates Gram negative infections; recruits WBCs to infection & activates cells to eradicate microbes
Definition
Tumor Necrosis Factor
Term
How does the flow cytometer identify cells?
Definition
Uses forward and lateral light scattering
Term
What is the flow cytometer used for?
Definition
Identify and count cells
Term
What type of antigen is found in another member of the host's species and capable of eliciting an immune response?
Definition
Alloantigen
Term
What is the purpose of memory cells?
Definition
To respond rapidly with subsequent encounter with antigen
Term
Protection as a result of prior experience with antigen
Definition
Acquired (adaptive, specific) immunity
Term
What is the normal range for CD8 cells in peripheral blood?
Definition
20-30%
Term
What distinguishes the two subsets of T cells?
Definition
The subsets produce different cytokines
Term
What are the primary phagocytic cells?
Definition
Neutrophil, monocyte, macrophage, & dendritic
Term
Where is the mucosal associated lymphoid tissue located?
Definition
Gastrointestinal, respiratory, & urogenital tract
Term
What CD marker is used to identify cytotoxic T cells?
Definition
CD8
Term
What are the T cell independent antigens?
Definition
Nonprotein antigen, such as carbohydrates or lipids
Term
What is inflammation?
Definition
Reaction of body to physical, chemical or microbial agents
Term
What is the function of macrophages-monocytes?
Definition
Phagocytes & APCs
Term
Know alleles but not haplotypes
Definition
Phenotype
Term
What is the function of CD2 on the T cell?
Definition
Receptor for sheep RBCs (rosette formation)-used to detect & identify T cells
Term
Enlarged lymph node
Definition
Lymphadenopathy
Term
At what T cell maturation stage does the CD3-TCR complex appear?
Definition
Double-positive
Term
Some examples of acute phase reactants are ___________ & ___________.
Definition
CRP (C-reactive protein)
Complement
Term
Non-protein antigen - T cell does not help B cell produce memory cells, class switching, or affinity maturation
Definition
T-independent antigen
Term
What are the CD markers associated with NK cells?
Definition
CD16 & CD56
Term
What is the purpose of the secondary lymphoid tissues?
Definition
Antigen filtration/sites for antigen-lymphocyte interaction (dating bars)
Term
Once the TCR has recognized the antigen, which CD marker transmits that information into the cell for activation?
Definition
CD3
Term
What is the function of lymphocytes?
Definition
Responsible for acquired immune responses (humoral & cell mediated)
Term
What are the secondary lymphoid tissues?
Definition
Spleen, lymph nodes, MALT & CALT
Term
Internal defenses are not generally exposed to environmental substances & include:
Definition
Phagocytosis, inflammation, fever, acute phase reactants, cytokines, & cells
Term
What are the CD markers associated with T lymphocyes?
Definition
CD2, CD3, CD5 & CD7
Term
IgM produced first; followed by heavy chain change to IgG, IgA, &/or IgE
Definition
Class switching
Term
What type of antigen belongs to the host and usually not capable of eliciting an immune response?
Definition
autoantigen
Term
What is the normal range for T cells in peripheral blood?
Definition
60-80%
Term
Injecting antigen to cause immunity
Definition
Immunization (vaccination)
Term
Fill in the following blanks: In the pro-B stage, __________ are formed.
Definition
Heavy Chains
Term
Fill in the following blanks: In the pre-B stage, __________ are formed.
Definition
Light Chains
Term
Fill in the following blanks: In the immature stage, ____________ are formed.
Definition
IgD
Term
Where are the T lymphocytes found in lymph node?
Definition
In the paracortex
Term
Where are the B lymphocytes found in lymph node?
Definition
In the cortex
Term
What type of immunity is an individual usually born with?
Definition
Natural (innate, nonspecific) immunity
Term
Which antibodies are present on the mature B cell?
Definition
IgM & IgD
Term
Protection by means of normally present body functions
Definition
Natural (innate, nonspecific) immunity
Term
What are the most common cells associated with chronic inflammation?
Definition
Macrophages & lymphocytes
Term
What area on chromosome 6 codes for class II MHC proteins?
Definition
DP, DQ, & DR
Term
What type of cells do the NK cells target in antibody independent cytotoxicity killing?
Definition
Diseased/cancerous cells with reduced class I MHC expression
Term
What method is used to separate lymphocytes from blood?
Definition
Density gradient centrifugation using Ficoll-Hypaque solution
Term
What stains are used to label antibodies?
Definition
Fluorescein isothiocyanate (FITC) & phycoerythrin (PE)
Term
What is the normal ratio for CD4:CD8 cells?
Definition
>1:1
Term
Memory response; secondary antibody response
Definition
Anamnestic response
Term
Lymphoid tissue located under skin epithelia
Definition
Cutaneous-associated lymphoid tissue (CALT)
Term
Cell mediated immunity is medicated by ___ lymphocytes.
Definition
T
Term
Cell mediated immunity is for what purpose?
Definition
Eliminating intracellular pathogens.
Term
What is the role of class I & class II MHC antigens?
Definition
Bind to antigen & transport to cell surface to be recognized by T cells
Term
Known haplotypes of an individual
Definition
Genotype
Term
Human MHC proteins
Definition
Human leukocyte antigens (HLA)
Term
Study of host reactions when foreign substances are introduced
Definition
Immunology
Term
What are the characteristics of acquired immunity?
Definition
Slow response, specific response, & memory capability
Term
What is the purpose of effector cells?
Definition
To eliminate or neutralize antigen.
Term
What are the CD markers associated with B lymphocytes?
Definition
CD19, CD20, CD21, CD22, & CD23
Term
On repeated contact with antigen, B cells (with the help of Th) are capable of producing antibodies with greater affinity (attraction) for antigen
Definition
Affinity maturation
Term
Factors involved in making a substance an immunogen include chemical composition/complexity (protein best), ______________, and ______________.
Definition
Size (larger better) and foreigness (less like self better)
Term
What affects acute phase reactant levels & what are the results?
Definition
Increase rapidly with infection, surgery, or trauma
Term
What cells are the class II MHC molecules found on?
Definition
B cells, monocytes, macrophages, dendritic, activated T cells, & endothelium
Term
Binding of two complementary strains (DNA or RNA)
Definition
Hybridization
Term
When is Th1 subset formed?
Definition
In infections caused by intracellular microbes
Term
Substance administered with immunogen to increase immune response
Definition
Adjuvant
Term
Substance which induces an immune response
Definition
Immunogen
Term
Heightened response with re-exposure to immunogen
Definition
Memory response
Term
What tumor marker is associated with the structure of the MHC I molecule?
Definition
Beta2 microglobulin
Term
High levels of Beta2 microglobulin indicate _______ prognosis.
Definition
poor
Term
External defenses are routinely exposed to environment substances and examples include:
Definition
NF, mucus secretions/cilia, antimicrobial substances-lysozyme & acid pH
Term
When is the Th2 subset formed?
Definition
In response to helminths infections & allergens
Term
Chemical messengers made by cells
Definition
Cytokines
Term
What is negative selection in B cell maturation?
Definition
Cells that don't recognize self proteins are eliminated
Term
Eliminate or neutralize organism or its products
Definition
Effector response
Term
What is the most common cell associated with acute inflammation?
Definition
Neutrophil
Term
Cytokine with antiviral activity & ability to activate macrophages
Definition
Interferon
Term
What are superantigens?
Definition
Product binds to TCR & class II MHC molecule & activates a large % of T cells
Term
Coat foreign particles & enhance phagocytosis
Definition
Opsonin
Term
Where is the PALS (periarteriolar lymphoid sheath) area located in the spleen?
Definition
In the white pulp
Term
What is one of the primary functions of tumor necrosis factor?
Definition
Defense against GN bacteria; triggered by LPS in cell wall
Supporting users have an ad free experience!