Quiz 4 chapt 22 Lymphatics EO

cell-mediated immunity is process whereby

a person develops immunity as a result of exposure to disease organisms or foreign toxins, venoms, allergens

Natural active immunity occurs when

an individual develops a disease by infection from another individual

t-lymphocytes are responsible for

cell-mediated immunity

Antibodies are composed of

gamma globulin proteins. ..

the human immunodeficiency virus that causes AIDS primarily infects

helper t cells

lack of reactivity of t cells and B cell to fragments of ones own protein is known as

immunological/self tolerance

A chemical that is produced by virus-infected cells and released to provide nonspecific antiviral protection to neighboring cells is

interferon

the thoracic lymphatic duct empties its lymph into the

left subclavian veins, and drains the lymph from the majority of the body (legs, abdomen, left side of head, left arm, and left thorax)

the most active phagocytic cells found in circulating blood are

neutrophils and macrophages

Whichh of the following antibodies provide immunity to a developing fetus?

passive immunity

plasma cells are a form of

plasma B cells/ plasmocytes and effector B cells

which of the following is considered to be a primary lymphatic producing organ

red bone marrow & thymus

the spleen

small organ/acts as a blood reservoir. Filters blood. Site of stem cell maturation into T and B cells. Destruction of blood-borne pathogens by macrophages. Removal of worn-out blood cells and platelets by macrophages. Resembling a large lymph node. Filters damaged red blood cells from the blood.

which of the following are phagocytes involved in

A phagocyte is a cell that removes foreign invaders of the body by engulfing them.Neutrophils, mast cells, and monocytes are all different types of specific phagocytes Phagocytosis of mycobacterium

an antigen is a foreign substance that causes ______ whereas an allergen is a foreign substance that causes ______

the formation of antibodies; a hypersensitivity reaction

A hapten is

the heavy chain of an immunoglobulin molecule

cytotoxic t cells recognize antigens combined with

MHC-I antigens

all of the following are true for natural killing cells

they destroy virus-infected cells, they destroy cells lacking MHC 1, They are stimulated by lysis of red blood cells. Use perforin to mediate lysis fo virus-infected cells. Mediate ADCC. Are part of innate immunity. Make IFN-y in response to IL-12 exhibit no memory response.

The functions of lymphatic system does NOT include

transporting hormones to intestinal smooth muscle

individuals born with severe combined immunodeficiency disease fail to develop

unable to repair DNA or develop disease-fighting/ immunodeficiency T cells total loss of B cells- lack of antibody formation