The fibrous capsule of lymph nodes contains strands called __________ that divide the node into compartments
The relatively common autoimmune disease in which the thyroid gland produces excessive amounts of thyroxine is called:
With immediate hypersensitivy, the antibody class that binds to mast cells and basophils that trigger the release of histamine and other chemicals is:
Regardless of whether it matures into a B cell or a T cell, a lymphocyte that is capable of responding to a specific antigen by binding to it is said to be:
Excess accumulations of fluid, which impair the exchange of materials within the tissues, is called
The inflammatory process begins with release of chemicals, which do all of the following EXCEPT:
Stimulate release of lysozyme
Systemic (bodywide) acute allergic response caused by allergens that directly enter the blood, as with certain bee stings or spider bites, is called __________.
Allergic contact dermatitis following skin contact with poison ivy would normally lead to:
Which one of the following is NOT true of the constant (C) regions of antibodies
They form an antigen-binding site
Tissues invaded by viruses, which attempt to replicate themselves by taking over cellular machinery, secrete small proteins called __________ to protect nearby cells and hinder further multiplication of the viruses.
Which one of the following is NOT one of the four most common indicators of the inflammatory response:
The role of the __________ in the lymphatic system is to remove worn-out blood cells and return some of the products to the liver.
Troublesome small molecules or incomplete antigens that may mount an attack that is harmful rather than protective are called __________.
The process by which WBCs and phagocytes migrate to an area experiencing acute inflammation is called __________.
One effect of complement fixation that causes the cell membranes of foreign cells to become sticky so that they are easier to phagocytize is called __________.
The specific antibody class that has the ability to cross the placental barrier and provide immunity to the fetus is:
The body's temperature-regulating "thermostat" that can be reset upward in response to pyrogens is located in the:
Which lymphatic organ's major job is to destroy worn-out red blood cells and return some of the products to the liver:
The specific foreign substances that an individual's immune system has the ability to recognize and resist is determined by:
Individual genetic makeup
The fluid that is forced out of the capillary beds by hydrostatic and osmotic pressures and into the tissue spaces is called:
A tropical disease that results when parasitic worms clog the lymphatic vessels is called
The binding of antibodies to specific sites on bacterial exotoxins or viruses is called
Compared to the nonspecific chemicals that cover body surfaces and mucous membranes, the specific body defense system is:
Which one of the following is NOT true of lymph nodes:
The have valves similar to those found in veins
Which one of the following CANNOT be said about the history of immunity:
scientists of the mid-1900s discovered the viral origin of AIDS
The specific type of acquired immunity that a fetus obtains from maternal antibodies that cross the placenta is called:
Naturally Acquired passive immunity
The process by which antibodies bind to specific sites on bacterial exotoxins (toxic chemicals secreted by bacteria) to block their harmful effects is called:
The binding of complement proteins to certain sugar or proteins on a foreign cell's surface is called
Which one of the following is NOT a type of immunosuppressive therapy given after surgery to prevent rejection of a graft:
Harmful or disease-causing microorganisms from which nonspecific defenses protect the body are called __________.
AIDS cripples the immune system by interfering with the activity of cells called __________.
Helper T Cells
Which one of the following is NOT a mechanism that aids lymph return:
The pumping action of the heart
Which one of the following is NOT true of macrophages:
They circulate continuously throughout the body
When an antigen binds to B cell surface receptors, it becomes sensitized (activated) and undergoes __________.
Antibodies constitute an important part of blood proteins and are also referred to as