The immune system protects us from infection through various lines of defense. If the immune system is not functioning, as it should, it can result in disease. Take up these immunology practice block 2 immunology test with explanations and get to learn more about this important system in the human body.
They possess membrane-bound antibodies
They can recognize and interact with antigens in the blood.
They produce numerous cytokines
They function only in cell-mediated immunity.
Their activation depends on interferon y.
Germinal center of secondary lymphoid nodules
White pulp of the spleen
Thymic cortex
Red pulp of the spleen
Paracortex of lymph nodes
Lymphoid nodules form much of the thymic cortex.
Epithelial reticular cells form Hassall corpuscles.
T cells migrate into the medulla, where they become immunologically competent.
Most T cells that enter the thymus are killed in the medulla.
Macrophages are essential components of the blood-thymus barrier.
It is produced by T memory cells.
It is produced by T suppressor cells.
It activates macrophages.
It inhibits macrophages.
It induces viral proliferation.
T memory cells
B memory cells
T helper cells
Plasma cells
T cytotoxic cells
They use MHC class I and class II molecules to present peptide antigens to T cells
They use MHC class I and class II molecules to present carbohydrate antigens to T cells
They secrete complement proteins that activate T cells
They present antigen:antibody complexes to T cells
Antigens from a parasite that infects endothelial cells
Antigens from a virus infecting endothelial cells
Antigens from a bacterium infecting endothelial cells
Antigens from extracellular bacteria
Antigens from bacteria that infects endothelial cells
Paracortex of lymph nodes
Cortical lymphoid nodules of lymph nodes
Hilus of lymph nodes
Lymphoid nodules of the tonsils
Lymphoid nodules of the spleen
Ts cells
B cells
T memory cells
TH cells
Mast cells
They assist macrophages in killing microorganisms
They possess antibodies on their surfacs.
They possess CD8 surface markers
They possess CD28 surface markers.
They secrete interferon -y.
They are located in the thymic cortex of young individuals.
They are located in the thymic cortex of old individuals.
They are derived from mesoderm.
They are located in the thymic medulla.
They are derived from T memory cells.
Produce complement proteins that can eliminate the pathogen
Phagocytosis of pathogens followed by presentation of antigens to B cells
Phagocytosis of pathogens followed by oxygen‐dependent and oxygen‐independent killing of the pathogen
Produce antibody molecules that can mark the pathogen for destruction
Phagocytosis of pathogens followed by formation of the membrane‐attack complex that causes lysis of pathogens
Inability to synthesize toxic nitric oxides
Failure to produce complement components
Failure to express toll‐like receptors
Failure to express MHC class I molecules
Failure to express surface‐bound antibody molecules
Activation of B cells
Neturalization of the antigen
Activation of complement
Phagocytosis of the antigen
Activation of T cells
MHC class I
MHC class II
Surface‐bound antibody molecules
Toll‐like receptors
Complement components
It is located in the serum and on the membrane of B cells.
It can cross the placental barrier.
It is involved in allergic reactions.
It exists as a pentamer.
It binds to antigens on the body surface and in the lumen of the gastrointestinal tract.
Small molecules that, on their own, are not immunogenic
Antibodies can bind, but binding is below threshold of driving an immune response
To make a hapten immunogenic, you must conjugate it to a carrier
Generally only have one epitope
All of the above
Hapten
Adjuvant
Epitope
Antibody
Hapten
Adjuvant
Epitope
Antibody
Activation of B cells
Neturalization of the antigen
Activation of complement
Phagocytosis of the antigen
Activation of T cells