question

The fibrous capsule of lymph nodes contains strands called __________ that divide the node into compartments

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Trabecullae

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The relatively common autoimmune disease in which the thyroid gland produces excessive amounts of thyroxine is called:

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Grave's disease

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With immediate hypersensitivy, the antibody class that binds to mast cells and basophils that trigger the release of histamine and other chemicals is:

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IgE

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substances is NOT typically perceived as an antigen:

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Self-antigens

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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:

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Immunocompetent

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Excess accumulations of fluid, which impair the exchange of materials within the tissues, is called

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Edema

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Musoca-associated lymphatic tissue (MALT) includes:

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Tonsils and Peyer's patches

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The inflammatory process begins with release of chemicals, which do all of the following EXCEPT:

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Stimulate release of lysozyme

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Which one of the following is NOT a method by which antibodies inactivate antigens:

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Chemotaxis

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Systemic (bodywide) acute allergic response caused by allergens that directly enter the blood, as with certain bee stings or spider bites, is called __________.

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Anaphalylactic shock

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Allergic contact dermatitis following skin contact with poison ivy would normally lead to:

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Delayed hypersentivity

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Which one of the following is NOT true of the constant (C) regions of antibodies

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They form an antigen-binding site

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Lymph fluid and some plasma proteins originate (escape) from the __________.

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Blood plasma

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The lymph organ that programs T cells and functions at peak levels only during youth is the

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Thymus

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The process by which neutrophils squeeze through capillary walls is called ______

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Diapedesis

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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.

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Interferon

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Which lymphoid tissues trap and remove bacteria entering the throat:

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Tonsils

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Which one of the following is NOT one of the antibody classes:

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IgB

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The clumping of foreign cells, a type of antigen-antibody reaction, is called ___

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Agglutination

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Which of these lymphoid organs is found along the left side of the abdominal cavity:

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Spleen

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The lymph tissues found within the walls of the small intestine are called:

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Peyer's patches

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Which one of the following is NOT one of the four most common indicators of the inflammatory response:

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Fever

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Which one of the following is NOT one of the nonspecific body defenses:

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Antibody production

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Antigen presentation is essential for the activation and clonal selection of

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T Cells

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Lymph from the left arm would return to the heart through the:

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Thoracic duct

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Which one of the following is NOT an autoimmune disease:

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AIDS

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Immune sera are used for all of the following EXCEPT:

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Tuberculosis

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Vaccines are NOT for:

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Snake bites

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The role of the __________ in the lymphatic system is to remove worn-out blood cells and return some of the products to the liver.

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Spleen

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Troublesome small molecules or incomplete antigens that may mount an attack that is harmful rather than protective are called __________.

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Haptens

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When B cells encounter antigens and produce antibodies against them, we exhibit

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Active immunity

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The process by which WBCs and phagocytes migrate to an area experiencing acute inflammation is called __________.

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Chemotaxis

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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 __________.

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Opsonization

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Lymph exits the lymph node via the __________ vessels

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Efferent lymphatic

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An isograft is a tissue graft donated by

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An identical twin

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The specific antibody class that has the ability to cross the placental barrier and provide immunity to the fetus is:

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IgG

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The body's temperature-regulating \"thermostat\" that can be reset upward in response to pyrogens is located in the:

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Hypothalamus

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Which lymphatic organ's major job is to destroy worn-out red blood cells and return some of the products to the liver:

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Spleen

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The specific foreign substances that an individual's immune system has the ability to recognize and resist is determined by:

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Individual genetic makeup

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The fluid that is forced out of the capillary beds by hydrostatic and osmotic pressures and into the tissue spaces is called:

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Lymph

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A tropical disease that results when parasitic worms clog the lymphatic vessels is called

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Elephantiasis

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The binding of antibodies to specific sites on bacterial exotoxins or viruses is called

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Neutralization

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Compared to the nonspecific chemicals that cover body surfaces and mucous membranes, the specific body defense system is:

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Slower

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Which one of the following is NOT true of lymph nodes:

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The have valves similar to those found in veins

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Lymph flows:

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Toward the heart only

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Which one of the following CANNOT be said about the history of immunity:

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scientists of the mid-1900s discovered the viral origin of AIDS

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The specific type of acquired immunity that a fetus obtains from maternal antibodies that cross the placenta is called:

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Naturally Acquired passive immunity

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The process by which antibodies bind to specific sites on bacterial exotoxins (toxic chemicals secreted by bacteria) to block their harmful effects is called:

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Neutralization

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The study of immunity is called:

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Immunology

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The binding of complement proteins to certain sugar or proteins on a foreign cell's surface is called

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Complement fixation

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Which one of the following is NOT a type of immunosuppressive therapy given after surgery to prevent rejection of a graft:

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Gamma globulin

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Fever has the effect of doing all of the following EXCEPT

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Stimulating complement fixation

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Harmful or disease-causing microorganisms from which nonspecific defenses protect the body are called __________.

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Pathogens

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IgA

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Is mainly found in mucus and secretions such as tears and saliva

question

AIDS cripples the immune system by interfering with the activity of cells called __________.

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Helper T Cells

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Which one of the following is NOT a mechanism that aids lymph return:

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The pumping action of the heart

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Which one of the following is NOT true of macrophages:

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They circulate continuously throughout the body

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Killer T cells, which kill virus-invaded body cells, are also called ________

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Cytotoxic T cells

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What specific type of acquired immunity do vaccines provide:

answer

Artificially acquired active immunity

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When an antigen binds to B cell surface receptors, it becomes sensitized (activated) and undergoes __________.

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Clonal selection

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Antibodies constitute an important part of blood proteins and are also referred to as

answer

Immunoglobulins

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Which one of the following is NOT a type of lymphoid organ:

answer

Appendix

question

The body's first line of defense against the invasion of disease-causing microorganisms is:

answer

Skin and mucous membranes

Lymphatic system review

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