Ch 22 THQ

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Which of these is specifically responsible for antibody-mediated immunity?

B cells

Which of these statements about the spleen is not correct?

The spleen is surrounded by trabeculae located outside the capsule

Which of the following can act as an antigen?

bacteria, viruses, pollen, food

The tonsils are characterized by:

being located around the pharynx and functioning as other lymph nodes

Normal immune responses require the presence of

both T lymphocytes and B lymphocytes

Afferent lymph vessels

carry lymph toward lymph nodes

Natural killer cells are believed to eliminate foreign cells by damaging their:

cell membranes

Which of the following represents the correct order in phagocytosis?

chemotaxis, adherence, ingestion

Which of these participates in costimulation?

cytokines

When stimulated, T cells that display the CD8 molecule develop into

cytotoxic T cells

Body cells infected with bacteria produce proteins called interferons.

false

All of the following are symptoms of inflammation EXCEPT:

fever

Which of the following is considered a chemical factor in the first line of defense?

gastric juice

Complement is a(n):

group of plasma proteins

Small molecules that must combine with large proteins to become immunogenic are called:

haptens

Which of the following stimulate the development of B-cells into antibody-producing plasma cells?

helper T cells

Cytokines include:

histamines and kinins

Antibodies produced by the immune system are:

immunoglobulins

It is possible to develop immunity to:

infectious agents, foreign cells, and abnormal body cells

The lymph nodes that remove pathogens in the lymph coming from the legs are called:

inguinal nodes

Which statement is NOT true of humoral immunity?

opsonization is the labeling of foreign antigens by self-antigens

Which of the following tonsils are paired structures?

palatine and lingual tonsils

Mrs. Smith received an Rh immunoglobulin injection after the birth of her last child. What type of immunity resulted?

passive immunity

Cytotoxic T cells can kill target cells directly by secreting

perforin and granulysin

The secondary antibody response:

prevents disease symptoms from occurring

Antibodies are ___________ molecules that may also be called _____________.

proteins/gamma globulins

Which of the following is not served by the thoracic duct of the lymphatic system?

right arm

The two general kinds of antigens, from the perspective of the immune system, are:

self antigens and foreign antigens

Which lymphoid organ has sinuses filled with blood instead of lymph?

spleen

The cells which are important in preventing autoimmune disease are:

suppressor T cells

Which statement is NOT true of cell-mediated immunity?

the foreign antigen is recognized by macrophages and helper B cells

The first line of defense against pathogens is:

the intact skin

Which statement is NOT true of lymph nodes?

the major groups are the cervical, axillary, and plantar nodes

Which statement is NOT true of lymph vessels?

the right lymphatic duct returns lymph to the inferior vena cava

Which of these organs does NOT compensate for any function of the spleen if the spleen must be removed?

thoracic duct

The two collecting ducts that drain the lymphatic trunks are the:

thoracic duct and right lymphatic duct

Which of the following lymphoid organs secretes thymosin?

thymus

The lymphatic system

transports lipids from the gastrointestinal tract to the blood b. returns filtered proteins to the cardiovascular system c. returns excess interstitial fluid to the cardiovascular system d. functions in surveillance and defense

Before T -cells can attack antigens, the T -cells must become sensitized

true

Cytotoxic T-cells destroy target cells on contact

true

Macrophages that remain in certain tissues and organs of the body are called fixed macrophages.

true

When a normal cell transforms into a cancer cell, it may display cell surface components called tumor antigens.

true

Lysozyme is found in all of the following EXCEPT:

vaginal secretions

Which of these conditions does not occur during the inflammatory response?

vasoconstriction of blood vessels

Interferon is a protection against:

viral infections

The peyer's patch

within the intestinal wall

Which statement is NOT true of the thymus and immunity?

T cells are the monocytes produced by the thymus

Cells that can directly attack target cells include all of the following except:

Helper T cells

The AIDS virus attacks the ____ cells:

Helper T cells

Predominant antibody found in mucus, saliva, and tears

IgA

bound to the surface of a B cell (two answers)

IgD and IgM

Binds to the surface of mast cells and mediates an allergic response

IgE

Crosses the placenta

IgG

Most abundant antibody found in blood plasma and the chief antibody released during secondary responses

IgG

Fixes complement (two answers)

IgG andIgM

First antibody released during the primary response

IgM

Pentamer

IgM

Antibodies are composed of

2 heavy and 2 light polypeptide chains

Antigen-presenting cells can:

- Take in foreign antigens - Process antigens - Use MHC class II molecules to display the antigens - Stimulate other immune system cells

Cell-mediated immunity is provided by:

T cells

Which of the following produces perforin?

Cytotoxic T cells

Delayed hypersensitivity is:

a result of antibodies reacting with allergen

lymph nodes

a. are bean-shaped organs b. located along lymphatic vessels c. are divided into follicles d. are scattered throughout the body

Cytokines:

a. promote inflammation b. activate macrophages c. kill target cells by causing them to lyse

Establishes immunological memory:

active immunity

Which statement is NOT true of the spleen?

antibodies are produced in the spleen by cells called fixed monocytes

Medullary sinuses of lymph nodes

are filled w lymph

Lymph nodes of the axillary region receive lymph primarily from the:

arm and mammary gland

Vaccination is an example of:

artificial active immunity

A student nurse who receives an injection of gamma globulin (containing antibodies to the hepatitis virus) after she/he has been exposed to viral hepatitis is an example of:

artificially acquired passive immunity

The process by which neutrophils squeeze through capillary walls in response to inflammatory signals is called:

diapeptises

Which of the following is not considered a lymphoid organ?

kidney

Which of the following does NOT belong to the lymphatic system?

liver

Which statement is NOT true of lymph?

lymph contains the neutrophils produced by the lymph nodes

The masses of lymphatic tissue located below the epithelium of mucous membranes are called:

lymph nodules

Natural killer cells are:

lymphocytes

The activation of cytotoxic T cells can result in the:

lysis of virus-infected cells b. production of cytokines c. production of memory T cells

Antigen presenting cells (APCs) include:

macrophages

The two major types of phagocytic cells are

macrophages and neutrophils

Variable amino acid sequences on the arms of the antibody molecule

make the amino acid specific to a given antigen

The Class I major histocompatibility complex (MHCI) antigens

marks surface on all body cells except red blood cells

Which of these cells is the most important in the release of histamine, which promotes inflammation?

mast cell

In both immune mechanisms, the cells that remember a foreign antigen and initiate its rapid destruction upon a second exposure are:

memory cells

Macrophages develop from:

monocytes

emigration refers to the

movement of cells from the circulatory system into infected tissue areas

Lymphocytes that destroy cancerous cells in a non-specific fashion are called

natural killer cells

Recovery from a disease may provide the type of immunity called:

naturally acquired active immunity

Antibodies migrate through the placenta into the vascular system of the fetus providing the baby at birth with temporarily immunity to the diseases his/her mother was immune to, is an example of:

naturally acquired passive immunity

Mother's milk will provide the infant with:

naturally acquired passive immunity


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