25:09IMMUNE SYSTEM MADE EASY- IMMUNOLOGY INNATE AND ADAPTIVE IMMUNITY SIMPLE ANIMATIONMEDSimplified453views
06:40Complement System Made Easy - Immunology- Classical Alternate & Lectin pathwayMEDSimplified1065views
03:52Induction of Fever, Control of Body Temperature, Hyperthermia, Animation.Alila Medical Media310views
Multiple ChoiceWhich type of molecule is produced by virus-infected cells to communicate to noninfected cells the presence of a virus?905views
Textbook QuestionWhat is complement? How does it cause bacterial lysis? What are some of the other roles of complement?279views
Textbook QuestionAll of the following are considered innate body defenses except a. complement, b. phagocytosis, c. antibodies, d. lysozyme, e. inflammation.290views
Multiple ChoiceWhich of the following minerals needed for bacterial reproduction do the liver and spleen sequester during a fever?806views
Textbook QuestionWhat seven defenses, present at birth, provide the body with the defensive capability known as innate (nonspecific) immunity?178views
Textbook QuestionFill in the blanks: Injured tissue releases chemicals called______ that mediate the four cardinal signs of inflammation, which are _____, ______,_____ , and_______.186views
Textbook QuestionCapillary permeability increases and plasma proteins leak into the interstitial fluid as part of the inflammatory process. Why is this desirable?266views
Textbook QuestionThe most beneficial effect of fever is that it (a) inhibits the spread of some bacteria and viruses, (b) increases the metabolic rate by up to 10 percent, (c) stimulates the release of pyrogens, (d) achieves a and b.219views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.b. Phagocytic cells of innate immunity include NK cells and basophils.171views
Textbook QuestionMultiple Choice More than one choice may apply. Chemical mediators of inflammation include a. interferon. b. complement. c. histamine. d. antibodies.229views
Multiple ChoiceA scientist is analyzing the cells from a granuloma tissue sample. Which type of immune cell is the scientist least likely to find in this sample?88views
Multiple ChoiceIn the respiratory burst, __________ are released; these have a potent cell-killing ability.808views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.e. Fever is generated by pyrogens that reset the temperature set point of the hypothalamus to a lower value.165views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.c. Neutrophils are a critical component of the response to a parasitic infection.158views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.c. NK cells are cytotoxic cells that lyse and kill cancer cells and cells infected with certain viruses.159views
Textbook QuestionThe process by which neutrophils squeeze through capillary walls in response to inflammatory signals is called a. diapedesis, b. chemotaxis, c. margination, d. opsonization.322views
Textbook QuestionGive a function for each of the following: (l) interleukins, (m) tumor necrosis factor, (n) colony-stimulating factors.215views
Textbook QuestionMultiple Choice More than one choice may apply. Against which of the following will interferon do some good? a. Infection of body cells by a virus b. Circulating free viruses c. Some types of cancer d. Bacterial infection230views
Textbook QuestionComplement activation promotes all of the following except a. cell lysis, b. inflammation, c. opsonization, d. interferon release, e. chemotaxis of neutrophils and other cells.338views
Textbook QuestionWhich of the following functions is/are performed by complement proteins?a. Cell lysisb. Opsonizationc. Enhancing inflammationd. Only a and be. All of the above174views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.d.Interleukin-1 is a cytokine that prevents viral replication in infected cells.180views
Multiple ChoiceWhich of the following is/are secreted by leukocytes and macrophages and result(s) in a fever?697views
Textbook QuestionInterferons are referred to as antiviral proteins. What stimulates their production, and how do they protect uninfected cells? Which cells of the body secrete interferons?222views
Multiple ChoiceWhich of the following scenarios would not result in an episode of acute inflammation?101views
Textbook QuestionMultiple Choice More than one choice may apply. Which of the following are among the most common indicators of inflammation? a. Phagocytosis b. Edema c. Leukocytosis d. Pain262views
Multiple ChoiceWhich nonspecific defense cells specialize in attacking cancer cells and virus-infected cells?1136views
Textbook QuestionInterferons are referred to as antiviral proteins. What stimulates their production, and how do they protect uninfected cells?235views
Multiple ChoiceWhen a localized area exhibits increased capillary filtration, hyperemia, and swelling, it is an indication that __________.1272views
Multiple ChoiceWhich of the following answers is an inflammatory mediator that stimulates vasodilation allowing immune cells to enter the site of infection?94views
Textbook QuestionCompared with innate defenses, adaptive defenses (a) do not distinguish between one threat and another, (b) are always present at birth, (c) protect against threats on an individual basis, (d) deny the entry of pathogens to the body.203views
Multiple ChoiceThe disease tuberculosis (TB) is a serious bacterial infection characterized by granulomas typically found in the lungs. What characteristics would a TB granuloma have?90views
Textbook QuestionEileen presents with flu-like symptoms, including fever, chills, and body aches.b. You order blood work and find that the number of neutrophils in the blood is greatly elevated. What does this tell you about the likely type of pathogen involved? Explain.177views
Textbook QuestionWhat is complement? Besides bacterial lysis, what are some of the roles of complement?300views
Textbook QuestionPhagocytes move through capillary walls by squeezing between adjacent endothelial cells, a process known as (a) diapedesis, (b) chemotaxis, (c) adhesion, (d) perforation.245views
Textbook QuestionComplement activation (a) stimulates inflammation, (b) attracts phagocytes, (c) enhances phagocytosis, (d) achieves a, b, and c.217views
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