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Immune System Chapter 18

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Match the following immune cells with their primary function:

B cells = Produce antibodies & memory T cells = Coordinate/unique memory Natural Killer cells = Cytoxic action- rupture membranes Monocytes = 2nd line of defense

Match the following types of immunity with their characteristics:

Humoral = Generate antibodies to disable pathogens Cell-Mediated = Activate B cells to remember next time Innate = Not mentioned in the passage Adaptive = Not mentioned in the passage

Match the following white blood cell types with their corresponding effects on infection:

Increased Lymphocytes = Viral or chronic bacterial infection Increased Neutrophils = Bacterial infection Decreased Neutrophils = Inability to fight off infection Increased Monocytes = Not mentioned in the passage

Match the following types of T cells with their primary functions:

Helper T cells = Work with B cells (CD4) Killer T cells = Destroy antigen Memory T cells = Can be CD4 or CD8 Suppressor T cells = Turn off immune system to prevent autoimmune response

Match the following white blood cell counts with their corresponding implications:

High WBC = Typically means infection Low WBC/Neutropenia = Inability to fight off infection Normal WBC = 5,000-10,000/mm3 ANC < 500 = Requires reverse isolation

Match the following immune responses with their corresponding descriptions:

Alarm system = Activate B cells to remember next time Cytotoxic action = Rupture membranes Immune system = Prevents autoimmune response Cytoxic action = Attack and kill infiltrated cells

Match the following immune cell types with their corresponding production sites:

B cells = Bone marrow T cells = Bone marrow and thymus Natural Killer cells = Not mentioned in the passage Monocytes = Not mentioned in the passage

Match the following immune system disorders with their corresponding implications:

Leukocytosis = Could be leukemia Neutropenia = Inability to fight off infection Autoimmune response = Not mentioned in the passage Immunodeficiency = Not mentioned in the passage

Match the following immune system responses with their functions:

Antibody production = Neutralize virus and prevent infection Complement = Lyses cells and brings to cell death Interferon release = Protects surrounding cells from viral infection Allergic responses = Responds to foreign but harmless antigens

Match the following immune system cells with their roles:

B-lymphocytes = Identify microbe and produce antibodies T-lymphocytes (Helper) = Help B-lymphocytes to make antibodies T-lymphocytes (Killer) = Attack infection T-lymphocytes (Suppressor) = Help to call a halt to the immune system response

Match the following immune system mechanisms with their outcomes:

Antibody-antigen complex = Activates complement to lyse cells First exposure to antigen = Stimulates small amount of antibody production Second exposure to antigen = Stimulates rapid production of large amounts of antibody Interferon release = Protects surrounding cells from viral infection

Match the following immune system responses with their effects:

Anaphylactic Shock = Sudden drop in intravascular blood volume and blood pressure Allergic responses = Inflammation Complement activation = Lyses cells and brings to cell death Antibody production = Neutralize virus and prevent infection

Match the following immune system cells with their functions:

WBC’s = Move in and start eating bacteria Neutrophils = Form pus B-lymphocytes = Identify microbe and produce antibodies Mast cells = Release histamine

Match the following immune system responses with their triggers:

Antibody production = Exposure to foreign antigen Allergic responses = Exposure to foreign but harmless antigens Interferon release = Viral infection of cells Complement activation = Antigen-antibody complex

Match the following immune system responses with their effects on microbe:

Antibody production = Neutralize virus Complement activation = Lyse cells T-lymphocytes (Killer) = Attack infection WBC’s = Eat bacteria

Match the following immune system responses with their treatments:

Anaphylactic Shock = Epinephrine IV or Epi-pen (SQ) Allergic responses = Anti-histamine Viral infection = Antiviral medication Bacterial infection = Antibiotic

Match the following components of the immune system with their functions:

Lymphoid organs = Produces white blood cells and lymphocytes Lymphocytes = Helps return tissue fluid into circulation Lymphatic vessels = Masses of lymphatic tissue grouped along lymph vessels Lymph nodes = Produces interferon to fight infection

Match the following types of antigens with their characteristics:

Exogenous antigens = Generated within the cell Endogenous antigens = Enter from outside the body Autoantigens = On the surface of tumor cells Tumor antigens = Recognized by the immune system in autoimmune disease

Match the following with their functions in the immune system:

Antigens = Helps to destroy pathogens Antibodies = Identifies type of cell and helps immune system determine if it is foreign or not White Blood Cells = Produces interferon to fight infection HLA = Surrounds and devours bacteria

Match the following with their associations:

HLA-DR1 = Rheumatoid Arthritis HLA-DR2 = Multiple Sclerosis HLA-DR3 = Celiac Disease HLA-DR4 = Grave's Disease

Match the following white blood cells with their characteristics:

Neutrophils = Engulf and destroy foreign bodies Basophils = Produce protective antibodies to overpower germs Eosinophils = Mature form of granulocytes Monocytes = Takes a stand during infection

Match the following with their functions in the immune system:

Lymphocytes = Produce protective antibodies to overpower germs Granulocytes = Helps to destroy pathogens Natural killer cells = Engulf and destroy foreign bodies Monocytes = Takes a stand during infection

Match the following with their functions in the immune system:

T cells = Produces interferon to fight infection B cells = Produce protective antibodies to overpower germs Natural killer cells = Engulf and destroy foreign bodies Lymph nodes = Masses of lymphatic tissue grouped along lymph vessels

Match the following with their functions in the immune system:

Spleen = Helps return tissue fluid into circulation Lymph nodes = Phagocytizes pathogens and produces WBC Lymphatic vessels = Masses of lymphatic tissue grouped along lymph vessels Thymus = Produces interferon to fight infection

Match the following with their associations:

Leukocytosis = Decrease in WBC count Granulocytes = Agranulocytes Lymphocytes = Takes a stand during infection Infection = Increase in WBC count

Match the following with their functions in the immune system:

Antibodies = Surrounds and devours bacteria White Blood Cells = Helps to destroy pathogens Lymphocytes = Produce protective antibodies to overpower germs HLA = Identifies type of cell and helps immune system determine if it is foreign or not

Match the following vaccinations with their recommended frequency or age:

Dpt = q 10 years Pneumovax = If high pulmonary history sometimes q 5 yrs Influenza/H1N1 = Yearly Herpes zoster = Once after age 60

Match the following therapeutic measures with their corresponding effects:

Epinephrine = Treats anaphylactic reactions Corticosteroids = Reduces inflammation Antihistamines = Treats allergic reactions Decongestants = Relieves nasal congestion

Match the following immune system assessments with their corresponding methods:

Titers = Blood tests Physical assessment = Objective data Skin tests = Diagnostic tests Gene testing = Diagnostic tests

Match the following medical management with their corresponding purposes:

Medic alert identification = Assesses allergies Anaphylaxis kit = Treats anaphylactic reactions Epi-Pen = Administers epinephrine Immunotherapy = Desensitizes patient with anaphylactic reactions

Match the following immune system disorders with their corresponding characteristics:

Aging = Decreased antibody response Autoimmune disorders = More prone to immune disorders Allergies = Exaggerated immune response Immunosuppression = Weakened immune system

Match the following immune system components with their corresponding functions:

Thymus gland = Produces immature T cells Memory cells = Recovers from infections Hepatitis B vaccine = Prevents Hepatitis B infection Chickenpox vaccine = Prevents Chickenpox infection

Match the following medications with their corresponding effects:

Antivirals = Treats viral infections Antibiotics = Treats bacterial infections Histamine H2 blockers = Treats allergic reactions Mast-cell stabilizing drugs = Stabilizes mast cells

Match the following surgical management with their corresponding indications:

Splenectomy = Removes spleen Immunosuppressants = Suppresses immune response Interferon = Treats viral infections Hormone therapy = Regulates hormonal balance

Match the following immune mediators with their corresponding functions:

Prostaglandins = Stimulates release of other mediators Interleukins = Labels foreign antigens for phagocytosis Interferon = Causes lysis of cells Complement = Stimulates production of antibodies

Match the following conditions with their corresponding effects on immunity:

Autoimmune Diseases = Decreased Immunity Burns/Trauma = Increased WBC production Bone Marrow Suppression = Increased Immunity Chemotherapy = Decreased WBC production

Match the following types of immunity with their characteristics:

Passive Immunity = Temporary, obtained from another source Active Immunity = Permanent, produces own antibodies Naturally Acquired Immunity = Obtained through infection or vaccination Artificially Acquired Immunity = Obtained through breast milk

Match the following with their corresponding modes of transmission:

Placental Transmission = From mother to fetus Breast Milk = From mother to infant Injection = Artificially acquired immunity Recovery from Disease = Naturally acquired immunity

Match the following immune mediators with their corresponding effects:

Complement = Causes lysis of cells Prostaglandins = Stimulates release of other mediators Interferon = Stimulates production of antibodies Interleukins = Labels foreign antigens for phagocytosis

Match the following types of immunity with their corresponding durations:

Passive Immunity = Temporary Active Immunity = Permanent Naturally Acquired Immunity = Long-term Artificially Acquired Immunity = Short-term

Match the following with their corresponding sources of immunity:

Tetanus = Artificially acquired immunity Recovery from Disease = Naturally acquired immunity Breast Milk = Passive immunity Vaccine = Active immunity

Match the following immune responses with their corresponding characteristics:

Passive Immunity = Obtained from another source Active Immunity = Produces own antibodies Naturally Acquired Immunity = Obtained through infection Artificially Acquired Immunity = Obtained through vaccination

What is the primary function of Memory B cells?

Remembering specific intruders to activate faster the next time

Which type of T cells is responsible for turning off the immune system to prevent autoimmune responses?

Suppressor T cells

What does an increase in Lymphocytes in the WBC differential typically indicate?

Viral or chronic bacterial infection

What is the normal range of WBC count?

5,000-10,000/mm3

What is the term for a very high, persistent level of WBC count?

Leukocytosis

What is the formula to calculate the Absolute Neutrophil Count (ANC)?

WBC x % of Neutrophils

What is the primary function of neutrophils in the inflammatory response?

To wall off infection and destroy the invader

What is the risk of infection if the ANC is less than 500?

Requires reverse isolation

What is the role of helper T cells in the immune response?

To stimulate the production of antibodies by B cells

What is the function of suppressor T cells?

To limit the immune response and prevent autoimmune disease

What is the primary function of Natural Killer cells?

Rupturing membranes through cytotoxic action

What is the main difference between cell-mediated immunity and humoral immunity?

Cell-mediated immunity involves T cells, while humoral immunity involves B cells

What is the primary function of the immune system?

To destroy pathogens or other foreign material

What type of antigen is generated within a cell?

Endogenous antigen

What is the function of natural killer cells?

To directly attack and destroy infected cells and tumor cells

What is the role of IgA antibodies?

To provide immunity in secretions such as tears and saliva

What is the purpose of HLA's in the immune system?

To differentiate between self and non-self

What is the function of cytotoxic T cells?

To directly attack and destroy infected cells

What is the term for an increase in white blood cells released from the bone marrow to fight infection?

Leukocytosis

What is the role of IgE antibodies?

To release histamine and cause an allergic response

What type of white blood cell engulfs and destroys foreign substances?

Monocyte

What is the term for the highway-like system that helps return tissue fluid into circulation?

Lymphatic vessels

What is the function of B cells in humoral immunity?

To produce antibodies and provide humoral immunity

What is the role of IgM antibodies?

To produce the first response against an infection

What is the function of the spleen in the immune system?

To phagocytize pathogens and produce white blood cells

What type of immune response is specific to a particular pathogen?

Specific immune response

What is the term for the chemical markers that identify cells and help the immune system determine if they are foreign or not?

Antigens

What is the term for the mass of lymphatic tissue grouped along lymph vessels?

Lymph nodes

What is the primary function of T cells in the immune system?

To stimulate B cells to produce antibodies

What happens during the first exposure to a foreign antigen?

Slow production of small amounts of antibodies

What is the role of interferon in the immune response?

To protect surrounding cells from viral infection

What is the result of an allergic response?

Release of histamine leading to inflammation

What is the function of B-lymphocytes in the immune response?

To identify and respond to microbes

What is the result of anaphylactic shock?

Loss of plasma from capillaries, leading to a sudden drop in blood pressure

What is the role of neutrophils in the immune response?

To 'eat' bacteria and form pus

What is the function of helper T cells in the immune response?

To help B-lymphocytes to produce antibodies

What is the function of the Complement system?

To label foreign antigens for phagocytosis

What is the result of a decreased immune response?

An increased risk of autoimmune diseases

What is the difference between passive and active immunity?

Passive immunity is produced on its own, while active immunity is obtained from another source

What is the role of prostaglandins in the immune response?

To release mediators

What is the effect of bone marrow suppression on the immune response?

A decrease in the production of white blood cells

What is the difference between naturally acquired and artificially acquired immunity?

Naturally acquired immunity is acquired through recovery from disease, while artificially acquired immunity is acquired through vaccination

What is the result of septic shock?

Cell lysis

What is the role of interferon in the immune response?

To produce a non-specific response to viral infections

Study Notes

Immune System Function

  • The immune system has the ability to destroy pathogens or other foreign material
  • It has a memory component that prevents further cases of certain infectious diseases
  • It has a fighter component that responds to microorganisms/foreign bodies and destroys them
  • The immune system can also mistakenly react to self, leading to autoimmune diseases

Immune System Components

  • Lymphoid organs: bone marrow, thymus
  • Lymphocytes and white blood cells
  • Chemicals: interferon
  • Lymphatic system: lymphatic vessels, lymph nodes, spleen

Lymphatic System

  • Lymphatic vessels: help return tissue fluid into circulation
  • Lymph nodes: masses of lymphatic tissue grouped along lymph vessels
  • Spleen: phagocytizes pathogens and produces WBC

Antigens

  • Chemical markers that identify type of cell and help the immune system determine if it's foreign or not
  • Stimulate the immune system to produce antibodies against them
  • Can be bacteria, viruses, or fungi
  • Can also be an allergen that brings on an allergic reaction

Types of Antigens

  • Exogenous: enter from outside
  • Endogenous: generated within a cell
  • Autoantigens: normal protein complex recognized by the immune system of patients suffering from autoimmune disease
  • Tumor antigens: on the surface of tumor cells

Human Leukocyte Antigens (HLA)

  • All human cells have self-antigens except RBC
  • HLA's are genetically determined
  • Important for tissue compatibility
  • Immune system uses HLA's to differentiate between self and non-self
  • Blood test can identify HLA's

HLA Blood Test

  • DR1: associated with Multiple Sclerosis
  • DR2: associated with Grave's Disease, Celiac Disease
  • DR3: associated with Juvenile DM
  • DR4: associated with Rheumatoid Arthritis, Juvenile DM
  • DR5: associated with Kaposi Sarcoma
  • DR6: unknown
  • DR7: associated with Celiac Disease

White Blood Cells (Leukocytes)

  • Main component of non-specific and specific immune responses
  • Begin in stem cells from bone marrow
  • Circulate in blood throughout the body and detect and destroy foreign bodies
  • Infection occurs: increase WBC's release from bone marrow to fight infection (Leukocytosis)

Types of White Blood Cells

  • Granulocytes: Neutrophils, Basophils, Eosinophils
  • Agranulocytes: Lymphocytes, Monocytes, Natural Killer cells

T Cells

  • Destroy invaders that intelligence systems have identified
  • Helper T cells: work with B cells (CD4)
  • Killer T cells: destroy antigen
  • Memory T cells (can be CD4 or CD8)
  • Suppressor T cells: turn off immune system to prevent autoimmune response (CD8)

Immune System Response

  • Humoral response: B cells and some T cells generate antibodies
  • Cell-mediated response: T cells coordinate unique memory and activate B cells to remember next time
  • Cytotoxic cells: attack and kill infected cells

WBC Differential

  • Decrease in one type of WBC usually means an increase in another
  • Neutrophils and Lymphocytes are the most abundant
  • Increased Lymphocytes: viral or chronic bacterial infection
  • Increased Neutrophils: bacterial infection
  • Look at trends, not just numbers
  • Shift to the left: increase in immature neutrophils (bands), means infection in progress

High WBC and Low WBC

  • High WBC: typically means infection, very high and persistent levels (Leukocytosis) could be leukemia
  • Normal WBC: 5,000-10,000/mm3
  • Low WBC/Neutropenia: inability to fight off infection, requires reverse isolation, ANC < 500, ANC < 100 severe risk for infection

Antibody Responses

  • First exposure to foreign antigen: stimulates antibody production in small amounts, which may happen too late, leading to infection
  • Second exposure to the antigen: memory cells initiate rapid production of large amounts of antibody, preventing infection
  • Antibodies may also neutralize virus, not letting it into the cell
  • Interferon release: chemical produced by cells infected by a virus that protects surrounding cells not infected
  • Allergic responses: antibodies respond to foreign but harmless antigens, IgE binds to mast cells and releases histamine, causing inflammation

Immune System and Aging

  • Thymus gland size decreases
  • Increased production of immature T cells
  • Decreased antibody response
  • More prone to autoimmune disorders
  • Need for vaccinations

Immune System Assessment and Therapeutic Measures

  • Subjective data: demographic data, history, current problem
  • Objective data: physical assessment, immunizations
  • Diagnostic tests: blood tests, radiographic tests, biopsies, skin tests, gene testing
  • Therapeutic measures: medications, immunotherapy, surgical management

Immune System Function

  • The immune system has the ability to destroy pathogens or other foreign material
  • It has a memory component that prevents further cases of certain infectious diseases
  • The fighter component responds to microorganisms and foreign bodies and destroys them
  • The autoimmune component mistakenly reacts to the body's own cells

Components of the Immune System

  • Lymphoid organs (bone marrow, thymus)
  • Lymphocytes (white blood cells)
  • Chemicals (Interferon)
  • Lymphatic system
    • Lymphatic vessels help return tissue fluid into circulation
    • Lymph nodes are masses of lymphatic tissue grouped along lymph vessels
    • Spleen phagocytizes pathogens and produces white blood cells

Antigens and Immune Response

  • Antigens: chemical markers that identify cells and help the immune system determine whether they are foreign or not
  • Types of antigens:
    • Exogenous (enter from outside)
    • Endogenous (generated within a cell)
    • Autoantigens (normal protein complexes recognized by the immune system in autoimmune diseases)
    • Tumor antigens (on the surface of tumor cells)
  • Human Leukocyte Antigens (HLA)
    • Genetically determined
    • Important for tissue compatibility
    • Used by the immune system to differentiate between self and non-self

White Blood Cells/Leukocytes

  • Main component of non-specific and specific immune responses
  • Produced in bone marrow and circulate in blood throughout the body
  • Detect and destroy foreign bodies
  • Increased in response to infection (leukocytosis)

Types of White Blood Cells

  • Granulocytes:
    • Neutrophils
    • Eosinophils
    • Basophils
  • Agranulocytes:
    • Lymphocytes
    • Monocytes
    • Natural killer cells

WBC Differential

  • Neutrophils and Lymphocytes are the most abundant WBCs
  • Increased Lymphocytes = Viral or chronic bacterial infection
  • Increased Neutrophils = Bacterial infection

Immune Response

  • Humoral immunity: involves production of antibodies
  • Cell-mediated immunity: involves activation of macrophages and natural killer cells
  • Involves recognition of foreign antigen by helper T cells (CD4) and activation of killer T cells

Antibodies

  • Produced in response to foreign antigens
  • Specific for one antigen
  • Label antigens for destruction
  • Five classes of human antibodies: IgG, IgM, IgA, IgE, IgD

Mechanisms of Immunity

  • Cell-mediated immunity: involves activation of macrophages and natural killer cells
  • Humoral immunity: involves production of antibodies

Types of Immunity

  • Passive immunity: obtained from another source, temporary
  • Active immunity: produces own antibodies, naturally or artificially acquired

Assessment of the immune system's function, including its ability to destroy pathogens, memory component, and therapeutic measures. Also covers the components of the immune system and autoimmune responses.

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