A&P II - Ch. 22 Quiz Questions (Lymphatic System)

Examples of physical barriers against pathogens include

all of the above (mucus, sebaceous glands, epidermal layers, epithelia)

Characteristics of specific defenses include

all of the above (tolerance, specificity, versatility, memory)

The body's nonspecific defenses include all of the following, except

antibodies

Compared to blood capillaries, lymph capillaries exhibit all of the following, except that they

are smaller in diameter

Each of the following is a physical barrier to infection, except

complement

The cells directly responsible for cellular immunity are the _____ cells.

cytotoxic T

CD8 markers are to ________ T cells as CD4 markers are to ________ T cells.

cytotoxic; helper

All of the following are true of the primary response of humoral immunity, except that it

is delayed by the memory cell stage

A sample of John's blood shows a high level of pyrogens. This would indicate that John

is running a fever

Class II MHC molecules are found only on which of the following?

lymphocytes and antigen-presenting cells

Helper T cells do all of the following, except

provide a rapid response to a future exposure to the antigen

Defense of the body against a particular pathogen is provided by

specific immunity

A crime scene investigator found that a biological fluid sample contains a large amount of IgA-type antibody. This fluid is probably

tears

T is to ________ as B is to ________.

thymus-dependent; bone marrow-derived

The cells responsible for humoral immunity are the ________ cells.

B

The first line of cellular defense against pathogens are the

phagocytes

Immunoglobulins that are primarily found in glandular secretions such as saliva and tears are

IgA

What does the primary response of humoral immunity include?

depends on antigen triggering the appropriate B cell peaks 1 to 2 weeks after the initial exposure circulating antibodies undergo a gradual, sustained rise requires B cell differentiation into plasma cells

In passive immunization

either C or D (body receives antibodies produced by other humans or body receives antibodies produced by an animal)

B cells are primarily activated by the activities of

helper T cells