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115 Cards in this Set
- Front
- Back
What are the 2 types of intrensic systems? |
Innate and adaptive |
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What is the innate intrinsic system? |
Nonspecific defense system |
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What is the adaptive intrinsic system? |
Specific defense system |
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What are the two lines of innate defense system? |
1st external body membranes 2nd antimicrobial proteins phagocytes and other cells |
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What is the line of adaptive defense system? |
3rd line of defense attacks particular foreign substances |
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What is keratin resistant to? |
Weak acids and bases, bacterial enzymes, and toxins |
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When is internal defense necessary? |
If microorganisms invade deeper tissues |
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What are types of internal defenses? |
Phagocytes, natural killer cells, antimicrobial proteins, inflammatory response |
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What do cytoplasmic extensions bind and engulf? |
Particles in vessels called phagosomes |
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What do macrophages develop from? |
Monocytes |
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What are inflammatory mediators? |
Kinins prostaglands and complement |
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What do helper t cells cause release of and what do they do? |
Enzymes of respiratory burst which kill pathogens resistant to lysosomal enzymes |
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What are natural killer cells? |
Nonphagolytic large granular lymphocyte that attack cells that lack self cell surface receptors and introduce apoptosis in cancer cells and virus infected cells |
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What are the cardinal signs of acute inflammation? |
Redness, heat, swelling, pain, and sometimes function impairment |
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What do activated like receptors (TRLs) trigger the release of? |
Cytokines that promote inflammation |
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What do clotting factors form? |
Fibrin mesh |
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What leads and what follows? |
Neutrophils lead and macrophages follow |
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True or false: If inflammation due to pathogens, complement activated; adaptive immunity elements arrive |
True |
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What are the steps to phagocyte mobilization? |
Leukocytosis, margination, diapedesis,chemotaxis |
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What do viral-infected cells secrete to warn neighboring cells |
IFNs (alpha and beta) |
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What are the 3 pathways to activation? |
Classical, lectin, and alternative |
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What is the classical pathway? |
Antibodies bind to invading organisms and to complement and components... First step in activation. More specific to antigen/antibodies |
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What pass the end effect of complement activation? |
Trigger inflammation Attract phagocyte Helps phagocyte attach Lyse gram - bacteria Activates b cells Remove harmful stuff |
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What acts on body's thermostat in hypothalmus to raising body temp? |
Pyrogens |
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What is the adaptive immune system? |
Protects against infectious agents and abnormal body cells. Amplifies inflammatory response. Activates complement. Must be primed by initial exposure to specific foreign substances. |
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What are the types of adaptive defenses? |
Specific (recognizes and targets specific antigens) Systemic (not restricted to initial site) |
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Which immunity has extracellular targets? |
Hummoral immunity |
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Which immunity has cellular targets? |
Cellular immunity |
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What acts against target cells? |
Lymphocytes |
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What are antigens? |
Large complex molecules not normally found in the body. Targets if all adaptive immune responses |
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What is immunogenicity? |
Ability to simulate proliferation of specific lymphocytes |
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What is reactivity? |
Ability to react with activated lymphocytes and antibodies released by immunogenic reactions |
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What isa hapten? |
Incomplete antigens |
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True or false: all parts of antigenic determinants of entire antigen are immunogenic. |
False only some parts are |
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What are b cells? |
Hummoral immunity |
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What are t cells? |
Cellular immunity |
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What are the 5 general steps of lymphocyte development maturation and activation? |
Origin, maturation, seeding secondary lymphoid organs and circulation, antigen encounter and activation, proliferation and differentiation |
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Where are b cells found? |
Bone marrow |
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Where are t cells found? |
Thymus |
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B and T cells nut they exposed tl antigen are called what? |
Naive |
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What determines which foreign substances immune system recognize? |
Genes |
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Where are dendritic cells found? |
Connective tissues and eppidermis |
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Where are macrophages found? |
Connective tissues and lymphoid organs |
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What is the most effective antigen presenter? |
Dendritic cells |
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What is necessary to activate t cells? |
Mhc protein |
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What are immunoglobulins? |
Gamma globulin portionnof blood |
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What are immunoglobulins capae of binding with? |
Antigens detected by B cells |
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What are the classes of immunoglobulins? |
IgM IgA IgD IgG IgE |
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Explain IgM |
Largest of Ig 1st antibody released and readily fixed and activates compliment. |
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Explain IgA |
In Mucuos Abbas other secretions (breast milk) helps prevent entry of pathogens |
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Explain IgD |
B cell receptor |
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Explain IgG |
Monitors for past infections |
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Explain IgE |
Antihistamine... Released during asthma attacks |
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What are the 2 most important defensive mechanisms? |
Neutralization and agglutination |
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What do antibodies block? |
Specific sites on viruses or bacterial exotoxins |
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What is agglutination |
Antibodies bind same determinate on more than one cell bound antigen |
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What is precipitation |
Soluble molecules are cross-linked |
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What are the two things T cells do |
Some directly kill cells and others release chemicals that regulate immune response |
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What are the two populations of T cells based on |
Which glycoprotein surface receptors are displayed |
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What do cd4 cells usually become |
Helper T cells |
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What is 88 cells become |
Cytotoxic T cells |
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What do cytotoxic T cells do |
They destroy cells harboring foreign antigens and also can become memory T cells |
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What is crucial for cd8 cell activation |
MHC proteins |
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What do cytotoxic cells ignore |
Displayed self-antigens |
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What bands are fragments of proteins synthesized in the cell also known as an endogenous antigen |
MHC proteins |
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What do dendritic cells do |
Dangle dying virus infected or tumor cells or import intentions via temporary gap junctions with infected cells then displays of class and one in class to MHCs |
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What is the two step process for T cell activation |
Antigen binding and co-stimulation |
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What does co-stimulation required T cells to bind to |
Are there surface receptors on an APC |
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What is the benefit of apoptosis |
Activated T cells are having produce large amount inflammatory cytokines hypoplasia and cancer |
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What are cytokines |
Bayer chemical messengers of the immune system and mediate cell development differentiation and responses in the immune system |
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How can b cells be activated without Th cells |
By binding to T cell independent antigens |
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What is it called when an antigen requires th co-stimulation to activate B cells |
T cell-dependent antigens |
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What do helper T cells do |
The amplifier response to innate immune systems activated macrophages which are more potent killers and mobilize lymphocytes and macrophages and attractive types of WBCs |
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What are targets of cytotoxic T cells |
Virus infected cells cells with intracellular bacteria or parasites cancer cells and foreign cells |
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Explain cytotoxic T cells |
They buy to self nonself complex and can destroy all infected or abnormal cells they're the only sell that can act indirectly |
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What are the four varieties of transplant |
1 autographs from one body site to another in the same person 2 isograph between identical twins 3 allografts between individuals who are not identical twins 4 exam across from another animal species |
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What is immunosuppressive therapy |
When a patient's immune system is suppressed |
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What are immunodeficiencies |
Congenital or acquired conditions that impair function or production of immune cells or molecules such as compliment or antibodies |
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What is Hodgkin's disease |
An acquired immunodeficiency cancer of the B cells that leads to immunodeficiency by depression in the lymph node self |
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What is AIDS |
It is caused by the human immunodeficiency virus transmitted via body fluids blood semen and vaginal secretions it can enter the body through blood transfusions blood contaminated needles sexual intercourse oral sex or mother to fetus it destroys th cells and depresses cellular immunity |
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What are hypersensitivities |
Their immune responses to perceived in otherwise harmless threat caused by tissue damage different types can be distinguished by their time course and whatever antibodies or T cells are involved |
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What can antibodies cause |
Immediate and subacute hypersensitivities |
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What is an acute hypersensitivity |
It's a hypersensitivity that begins in seconds after contact with the allergen |
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What happens during a hypersensitivity |
I ge binds to myself and basophils in a flood of histamine releases and induces inflammatory response |
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What is anaphylactic shock |
This is some response to an allergen that directly into the blood and circulates rapidly |
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What happens during anaphylactic shock |
Constriction of bronchioles :-P well sudden vasodilation and fluid loss from blood stream may occur circulatory collapse and death |
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Explain delayed hypersensitivity |
Cytokine activated macrophages and cytotoxic T cells cause damage agents act as haptens TB skin test depends on this reaction |
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What are the major organs of the respiratory system |
Nose nasal cavity paranasal sinuses pharynx larynx trachea bronchi and their branches the lungs and the alveoli |
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What is pulmonary ventilation |
The movement of air into and out of the lungs |
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What is external respiration |
Oxygen and carbon dioxide exchange between lungs and blood |
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What is internal respiration |
Oxygen and carbon dioxide exchange between systemic blood vessels and tissues |
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What is the respiratory zone |
The site of gas exchange |
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What is the conducting zone |
It conducts gas to exchange sites |
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What are the functions of the nose |
Provides an airway for respiration license and warms entering air filters clean inspired air serves as a resonating chamber for speech in a house is the olfactory receptors |
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Where is the nasal vestibule |
It is the nasal cavity superior to the nostrils |
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What are the functions of the nasal mucosa and conchae |
During inhalation conchae and nasal mucosa filter heat and moisten air during acceleration they reclaim the heat in the washer |
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What are the three regions of the pharynx |
Nasopharynx oropharynx and laryngopharynx |
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What is the pharynx |
It is the muscular tube from the base of the skull to the c6 it connects the nasal cavity and the mouth to the larynx and esophagus |
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What are the parts of the oropharynx |
The Isthmus of fauces opening to the oral cavity the palatine tonsils in thelateral walls of the fauces and lingual tonsils on posterior surface of the tongue |
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What is the laryngopharynx |
A passageway for food and air posterior to the upright epiglottis in extenso larynx where continuous with the esophagus |
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What are the nine cartilages of the larynx |
Thyroid cartilage with laryngeal prominence ring-shaped Cricut cartridge parent annoyed cuneiform & corniculate cartilages epiglottic vocal ligaments vestibular folds |
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What is involved in the control of respiration |
The medulla and the pons |
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What is my powerful respiratory stimulant |
Rising carbon dioxide levels |
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What is intrapulmonary pressure |
Pressure in the alveoli |
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What is atelectasis |
Lung collapse due to plug bronchioles collapse of alveoli pneumothorax air in the pleural cavity |
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What can cause lung collapse |
If intrapleural pressure equals intrapulmonary pressure or atmospheric pressure |
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What causes transpulmonary pressure |
If intrapulmonary pressure is less than intrapleural pressure |
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What is Boyle's law |
Pressure varies inversely with volume |
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What are three physical factors influencing pulmonary ventilation |
Airway resistance alveolus surface tension and lung compliance |
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What happens is every resistance rises |
Breathing movements become more strenuous |
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What is surfactant |
Detergent Lake lipid and protein complex produced by type 2 alveolar cells and reduces surface tension of a violar fluid and discourages alveolar collapse |
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What is the main source of resistance with external respiration |
Friction |
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Which way to Cecilia move contaminated mucosa |
Posteriorly to the throat |
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What did what depends on the force of air |
Loudness |
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What is the adventitia |
The outermost layer made of connective tissue and in case of the Rings of hyaline cartilage |