Review of Inflammation Flashcards
What are the two human defense mechanisms?
Innate Immunity,
Adaptive Immunity
What is innate immunity?
Immunity that is present at birth
What is an example of innate immunity?
Skin,
Inflammation
What is adaptive immunity?
Immunity that is acquired after birth
What is an example of active adaptive immunity?
Vaccines,
Exposure/Infection
What is an example of passive adaptive immunity?
Breast Milk,
Immunoglobulin Injection
What are the first lines of defense?
Physical Barriers,
Mechanical Barriers,
Biochemical Barriers
What kind of tissue is a physical barrier?
Epithelial Tissue
Why is epithelial tissue an important barrier?
Its stratified,
It sloughs,
Has tight junctions
Why is sloughing of epithelial tissue important?
Sheds pathogens,
Sheds damaged cells
What are some examples of mechanical barriers?
Movement of cilia, Vomiting, Sneezing, Coughing, Urinating, Defecating
What are some examples of biochemical barriers?
Tears, Saliva, Mucosa, Sweat, HCl, Antimicrobial substances
What are some examples of antimicrobial substances?
Vaginal lactoacillus prevents Candida albicons
GI flora prevents Clostridium difficile
What is the second line of defense?
Inflammation,
Vascular Responses,
Plasma Protein Systems
How is inflammation activated?
Tissue Damage
T or F: Inflammation is a non-specific response.
True
What are six manifestations?
Heat, Redness, Edema, Pain, Pus, Clotting
What are the three vascular responses?
- Vasodialation (redness/heat)
- Increased capillary membrane permeability (edema)
- Increased leukocyte adhesion and migration into interstitium (pus)
What are the three advantages of vasodialation?
- Increased leukocyte delivery
- Increased nutrient delivery (Oxygen, Glucose, Amino Acids)
- Removal of waste and cellular debris
How are plasma protein systems activated?
Tissue damage or presence,
Presence of bacteria
What are the three plasma protein systems?
Complement System,
Clotting System,
Kinin System
What are the functions of the complement system?
Opsonizes target cells for phagocytosis,
Formation of MAC,
Chemotaxis of leukocytes,
Mast cell degranulation
What is opsonization?
To tag and identify for a neutrophil
What does MAC stand for?
Membrane Attack Complex
What are the three advantages of vasodialation?
- Increased leukocyte delivery
- Increased nutrient delivery (Oxygen, Glucose, Amino Acids)
- Removal of waste and cellular debris
How are plasma protein systems activated?
Tissue damage or presence,
Presence of bacteria
What are the three plasma protein systems?
Complement System,
Clotting System,
Kinin System
What are the functions of the complement system?
Opsonizes target cells for phagocytosis,
Formation of MAC,
Chemotaxis of leukocytes,
Mast cell degranulation
What is opsonization?
To tag and identify for a neutrophil
What does MAC stand for?
Membrane Attack Complex
What is the purpose of the clotting system?
Homeostasis,
Trap bacteria,
Form framework for new tissue growth
T or F:All bacteria can be trapped in a clot.
False. Hemolytic bacteria break through
What does bradykinin cause?
Vasodialation,
Increase in capillary membrane permeability,
Stimulates pain receptors
What are mast cells?
Basophils in tissue spaces
Where are mast cells found?
Dermis,
Respiratory epithelium,
GI mucosa,
(Places where allergic reactions happen)
What is degranulation?
Release of chemicals from vesicles via exocytosis into interstitium
What are the four triggers for degranulation?
- Tissue damage leading to release of complement
- Presence of bacteria
- Immune reaction (AB, AG)
- Chemicals (toxins)
What do these trigger?
- Tissue damage leading to release of complement
- Presence of bacteria
- Immune reaction (AB, AG)
- Chemicals (toxins)
Degranulation
What is the release of chemicals from vesicles via exocytosis into interstitium called?
Degranulation
What are basophils in tissue spaces called?
Mast Cells
What systems purpose is to maintain homeostasis, trap bacteria, and form framework for new tissue growth?
Clotting System
What chemical mediators have an immediate response?
Histamine, Neutrophil Chemotactic Factor, Eosinophil Chemotactic Factor, Interleukin 4, Tumor Necrosis Factor (TNF)
What chemical mediators have a delayed response (8-10 hours)?
Leukotrienes, Prostaglandins, Interleukins, TNF, Growth Factors
What does histamine do?
Increase capillary membrane permeability (edema) Causes vasodialation (redness/heat)
What does neutrophil chemotactic factor do?
Attracts neutrophils to the area
What does eosinophil chemotactic factor do?
Attracts neutrophils to the area
What does Interleukin 4 do?
Stimulates AB production
What cells make ABs
Plasma Cells
What does AB stand for?
Antibody
What does AG stand for?
Antigen
What are heat, redness, edema, pain, pus, clotting?
Manifestations
What is vomiting, sneezing, coughing, uringating, and defecating examples of?
Mechanical Barriers
What is saliva, tears, mucosa, sweat, and HCl examples of?
Biochemical Barriers
What does Tumor Necrosis Factor (TNF) do?
Increases capillary membrane permeability (edema),
Increases leukocyte emigration (pus)
What does leukotriene do?
Causes vasodialation (redness/heat), Increases vessel permeability (edema)
What does prostaglandin do?
Stimulates pain receptors,
Causes vasodialation (redness/heat),
Increases capillary membrane permeability (edema)
What chemical blocks prostaglandins?
Aspirin
What chemical mediator does aspirin block?
Prostaglandins
What does interleukin do?
Increases AB production by plasma cells,
Helps in Active Adaptive Immunity
What does TNF do as a delayed reaction?
Increase AB production by plasma cells,
Helps in Active Adaptive Immunity
What does growth factor do?
Promotes growth of endothelial tissue,
Promotes growth of scar tissue
What are the three primary functions of neutrophils?
- Phagocytosis
- Release cytotoxic Chemicals (free radicals)
- Release macrophage chemotactic factor
What releases macrophage chemotactic factor?
Neutrophils
What are macrophages?
Monocytes in tissue spaces
T or F:Monocytes in tissue spaces are called macrophages.
True
T or F:Macrophages have a long lifespan, but can NOT divide on site.
False. They have a long lifespan and CAN divide on site
What are the primary functions of macrophages?
- Phagocytosis
- Release cytotoxic chemicals (free radicals)
- Present AGs to cells of Adaptive Immune System
What is the first way to stimulate adaptive immunity?
Interleukin
What is the second way to stimulate adaptive immunity?
Macrophages
What is the primary function of eosinophils?
Provide protection against parasites,
Regulate role of vascular mediators released by mast cells
What cells provide protection against parasites?
eosinophils
What is the primary function of NK (null) cells?`
First line of defense against: Foreign Cells, Transplanted Cells, Cancer Cells, Virally Infected Cells
What is another name for NK Cells?
Null Cells
Why are NK cells termed “null cells”?
Lymphocytes that are neither B or T cells
What causes pain?
Bradykinin,
Prostaglandins
What causes heat?
Bradykinin,
Histamine,
Leukotrienes,
Prostaglandins,
What causes redness?
Bradykinin,
Histamine,
Leukotrienes,
Prostaglandins
What causes edema?
Bradykinin, Histamine, Tumor Necrosis Factor (TNF), Leukotrienes, Prostaglandins
What causes pus?
Tumor Necrosis Factor (TNF)