Exam 32: Innate Immunity

A macrophage can migrate out of the bloodstream.

A person's natural killer cells usually kill cells of their own body.

Which of the following does not describe phagocytosis?

Tobacco mosaic virus can destroy tobacco plants. It has no effect on humans. This is an example of species resistance.

Diapedesis is the process by which microbes are marked for destruction by phagocytic cells.

Which of the following is not part of the inflammation response?

The inflammatory response is the body's first line of defense.

To prevent accidental harm to the body, complement can be activated only by antibodies.

There are three types of interferon: leukocyte, fibroblast, and immune.

Complement can be activated only by the specific immune system.

Pavementing is the attraction of neutrophils to the site of an infection.

Species resistance refers to a phenomenon in which the genetic characteristics common to a species provide defense against certain pathogens.

Phagocytosis is the "first line of defense" in nonspecific immunity.

Mechanical and chemical barriers can be called the body's first line of defense.

The type of immune mechanism that provides a general defense by acting against anything recognized as "not self" is called:

Cytokines include leukotrienes, interferons, and histamine.

When pseudopods form a phagocyte, completely surrounding an organism and forming a sac around it, the structure formed is called a phagosome.

All of the following represent examples of nonspecific immunity except:

The body's first line(s) of defense is(are) the:

Aspirin is effective in lowering fever because it inhibits the growth of the disease-causing organisms.