Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
41 Cards in this Set
- Front
- Back
name the three functions of the lymphatic system:
|
fluid return, filtration, immunity
|
|
name the four lymphatic organs:
|
red bone marrow, spleen, thymus, tonsil
|
|
pumping action of companion artery
skeletal muscle pump valves that prevent backflow are examples of what? |
lymph flow
|
|
the lymph capillaries (blind end tubes leading away from tissue) lead to lymph ____ which lead to lymph _____
|
vessels, nodes
|
|
the lymph system drains into two ducts, the ____ ____ duct and the ____ duct.
|
right lymphatic and thoracic
|
|
the right thoracic duct drains the:
|
right part of the face, the right arm, the right part of the thorax
|
|
the thoracic duct drains most of the body. the two lumbar trunks,and the intestinal trunk join to form a prominent sac called the ____ ____.
|
cisterna chyli
|
|
_____: painless nonpitting edema of extremities, elephantitas
|
lymphedema
|
|
lymphatic cells: ____ ___ cells are large lymphocyte that attack and destroy bacteria, transplanted tissue cells and host cells that have either become infected with viruses of turned cancerous. responsible for immune defense
|
natural killer cells
|
|
__ _______ cells are lymphocytes that mature in the thymus and later depend on the thymic hormones
|
t-lymphocytes
|
|
__ _____ are lymphocytes that differentiate into plasma cells--connective tissue cells that secrete the antibodies of the immune system.
|
b lymphocytes
|
|
_____ are very large avidly phagocytotic cells of the connective tissues. they develop from monocytes that have migrated from the bloodstream. they phagocytize tissue debris, dead neutrophils, bacteria, and other foreign matter.
|
macrophages
|
|
_____ cells are branched mobile APC's found on the epidermis, mucous membranes and lymphatic organs.
|
dendritic cells
|
|
tissue: ___-____ ____ ___ is the diffuse system of small concentrations of lymphoid tissue found in various sites of the body such as the gastrointestinal tract, thyroid, breast, lung, salivary glands, eye, and skin.
|
mucosa-associated lymphoid tissue
|
|
The ______ are areas of lymphoid tissue on either side of the throats of vertebrates.
|
tonsils
|
|
the ____ ____ is composed of a large population of widely distributed cells that recognize foreign substances and act to neutralize or destroy them.
|
immune system
|
|
3 lines of defense: ___-____ defense cells recognize and respond to pathogens in a generic way, it does not confer long-lasting or protective immunity to the host
|
non-specific defense
|
|
3 lines of defense:The ____ _____ provides the immune system with the ability to recognize and remember specific pathogens, to generate immunity, and to mount stronger attacks each time the pathogen is encountered. It is adaptive immunity because the body's immune system prepares itself for future challenges.
|
specific defense
|
|
3 lines of defense:(non-specific) ____ line of defense- consists of external barriers, skin and mucous membranes.
|
first
|
|
3 lines of defense:___ line of defense consists of several non specific defense mechanisms against pathogens that break through the skin or mucous membranes. include leukocytes, macrophages, antimicrobial proteins, immune surveillance, inflammation, and fever.
|
second
|
|
3 lines of defense: ____line of defense is the immune system, which not only defeats a pathogen but leaves the body with a memory of it.
|
third
|
|
when a cell becomes infected with viruses, they secrete ____. these alert neighboring cells and help them protect themselves.
|
interferons
|
|
the ____ system is a group of 30 or more globulins that make powerful contributions to both nonspecific and specific resistance. most of the protein are synthesized by the liver.
|
compliment
|
|
___ is an abnormal elevation of the body temperature. fever is initiated by exogenous pyrogens.
|
fever
|
|
_____ is a local response to tissue injury of any kind, including trauma and infection. its purposes are: to limit the spread of pathogens and ultimately destroy them, to remove debris of damaged tissue, and to initiate tissue repair.
|
inflammation
|
|
the four cardinal signs of inflamation:
|
redness, swelling, heat and pain
|
|
3rd line: ____ immunity employs lymphocytes that directly attack and destroy foreign cells or diseased host cells that reside in human cells. T cells
|
cellular immunity
|
|
3rd line: ____ immunity is meditated by antibodies, which do not directly destroy a pathogen but tag them for destruction. B cells
|
humoral immunity
|
|
____ immunity produces memory cells. ____ is ones on antibodies and ____ comes from vaccinations.
|
active, natural, artificial
|
|
____ immunity is know as a temporary immunity. ____ is when a baby gets antibodies from the placenta or breast feeding. ____ is when you get an injection of immune serum obtained from another person or animals.
|
passive, natural, artificial
|
|
an ___ is a molecule that triggers an immune response.
|
antigen
|
|
maturation of t: t cells are born in the ___ ___ ___. they are realeased into the blood where they colonize in the ____, once here t-cells are tested and become _____ (capable of recognizing antigens presented by APC). once all tests are passed t cells colonize lymphatic tissue and organs everywhere.
|
red bone marrow, thymus, immunocompetent
|
|
maturation of b: b cells are born in the ___ ___ ___ all maturation takes place here as well.
|
red bone marrow,
|
|
t cells cannot recognize foreign antigens on their own. they require the help of _____ ____ cells.
|
antigen presenting cells
|
|
antibodies:found in mucus, saliva, tears, milk, intestinal secretions, passive immunity to newborn
|
IgA
|
|
antibodies:a transmembrane protein of B cells; thought to function in activation of B cells by antigens
|
IgD
|
|
antibodies: a transmembrane protein of basophils and mast cells. stimulates them to release histamine and other chemical mediators of inflammation.
|
IgE
|
|
antibodies: 80% of circulating antibodies, secondary immune response, crosses placenta to fetus
|
IgG
|
|
antibodies: 10% of the circulating antibodies in plasma, aggulation and compliment fixation--primary immune response
|
IgM
|
|
antibody methods of attack:
1 ____ mask pathogenic region of antigen 2. ___ IgM or IgG bind to enemy cells and change their shape |
neutralization, compliment fixation
|
|
3____ binds and immobilizes foreign antibodies
4_____ antigen-antibody complex precipitate phagocytized by eosinophil |
agglutination, precipitation
|