Immune system - Active and passive immunity

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Quiz on active and passive immunity on the immune system, touching on topics such as cell mediated immunity. Much shorter and less traumatizing than my other quizzes.

1

Which is true for active humoral immunity:
- Antibodies are harvested from serum of immune human.
- Passive transfer occurs from mother to foetus across placenta.
- It infuses gamma globulin for immediate short term protection.
- It is naturally acquired during viral / bacterial infection.
2

Active humoral immunity can be acquired from:
- Dead or attenuated pathogens.
- Viral infections.
- Bacterial infections.
- All of the above.
- None of the above.
3

In cell mediated immunity, ______ are lymphocytes that have detoured through the thymus on their way from the bone marrow to lymph nodes and spleen
- B cells
- T cells
- Antigens
- Antibodies
4

Each T cell has antigen receptors on surface. T cells only react to antigens that are presented to them on the surface of antigen-presenting cells.
- True. Thereafter, effector T cells and memory T cells are formed.
- True. Thereafter cytotoxic T cells travel to site where antigen entered body and release chemical messengers into the inflamed tissue.
- False.
5

Cytotoxic T cells and Helper T cells are known as:
- Suppressor T cells.
- Effector T cells.
- Cytokines
- Memory T cells.
6

Cytotoxic T cells travel to site where antigen entered body and releases the following chemical messengers into the inflamed tissue:
- Cytokines.
- Chemotactic factors.
- Lymphotoxin (powerful poison that acts quickly to kill cells).
- All of the above.
- None of the above.
7

Cytotoxic T cells also:
- regulate adaptive immune function by regulating T and B cell function.
- bind directly to the surface of the enemy cell and destroy the cell.
- “turn off” immune response to restore homeostasis.
8

Helper T cells:
- help regulate adaptive immune function by regulating T and B cell function.
- Stimulate cytokines to recruit B cells, cytotoxic T cells, phagocytes and other leukocytes.
- Must still be activated by binding of antigen to antigen presenting cell or antibody.
- All of the above.
- None of the above.
9

___ help “turn off” immune response to restore homeostasis.
- Helper T cells
- Effector T cells
- Cytotoxic T cells
- Suppressor T cells.

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Immune system - Active and passive immunity

Which is true for active humoral immunity:

Active humoral immunity can be acquired from:

In cell mediated immunity, ______ are lymphocytes that have detoured through the thymus on their way from the bone marrow to lymph nodes and spleen

Each T cell has antigen receptors on surface. T cells only react to antigens that are presented to them on the surface of antigen-presenting cells.

Cytotoxic T cells and Helper T cells are known as:

Cytotoxic T cells travel to site where antigen entered body and releases the following chemical messengers into the inflamed tissue:

Cytotoxic T cells also:

Helper T cells:

___ help “turn off” immune response to restore homeostasis.

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