Exam 9: The Immune System and Mechanisms of Defense

The ________ class of immunoglobulins is the most common type and is the only type that can cross the placenta to pass on the mother's acquired immunity to the developing fetus.

Match each component of the lymphatic system to its function. -removes microorganisms and old red blood cells from the blood

________ primarily targets T helper cells of the immune system.

Which of the following are proteins in the blood that can be activated to lyse bacterial cells, mark other bacterial cells for destruction, and enhance inflammation?

Helicobacter pylori can survive the acidic conditions of the human stomach and have been found to cause the development of stomach ________.

Microbes that cause disease are referred to as ________.

An individual with an uncertain vaccine history has been brought to the emergency room after receiving severe lacerations in an accident with farm machinery. In addition to administering a tetanus toxoid vaccine, he is given a shot of tetanus immune globulin (TIG), a form of passive immunization. Why are both necessary?

Which one of the following enables T helper cells to stimulate and activate other cells of the immune response?

The ________ are lymphatic tissues that protect the throat.

The two major types of phagocytic cells are the ________ and the ________.

Which of the following leukocytes kills its target cells, such as cancer cells or virus-infected cells, by releasing chemicals that break down the target cell membrane?

When considering transfusions or transplants, it is more difficult to match blood than to match tissue types because blood cells have more self markers on their surface.

During cytotoxic T cell attack of a target cell, which one of the following is released to pierce the cell membrane of the foreign cell, which ultimately kills the target cell?

Match each of the following disorders associated with the immune system to its description. -an inappropriate response to a nonpathogenic substance

Tears and saliva contain ________, an enzyme that kills bacteria.

If you travel through an airport during a major holiday season, you are very likely exposed to a number of potential pathogens. Describe some of the first lines of defense that your body uses to keep these pathogens out of your body.

Microorganisms and cellular debris are removed from lymph by the ________ and from blood by the ________.

Which of the following classes of antibodies activates the inflammatory response by causing the release of histamine?

Antibiotics kill bacterial cells but do not (usually) damage human cells by taking advantage of the difference between human and bacterial cells. These differences include

Inflammation generally results when tissues become damaged and ________ cells respond by releasing histamine.