25:09IMMUNE SYSTEM MADE EASY- IMMUNOLOGY INNATE AND ADAPTIVE IMMUNITY SIMPLE ANIMATIONMEDSimplified456views
06:40Complement System Made Easy - Immunology- Classical Alternate & Lectin pathwayMEDSimplified1072views
03:52Induction of Fever, Control of Body Temperature, Hyperthermia, Animation.Alila Medical Media312views
Multiple ChoiceWhich type of molecule is produced by virus-infected cells to communicate to noninfected cells the presence of a virus?906views
Textbook QuestionWhat is complement? How does it cause bacterial lysis? What are some of the other roles of complement?295views
Textbook QuestionAll of the following are considered innate body defenses except a. complement, b. phagocytosis, c. antibodies, d. lysozyme, e. inflammation.296views
Multiple ChoiceWhich of the following minerals needed for bacterial reproduction do the liver and spleen sequester during a fever?809views
Textbook QuestionWhat seven defenses, present at birth, provide the body with the defensive capability known as innate (nonspecific) immunity?183views
Textbook QuestionFill in the blanks: Injured tissue releases chemicals called______ that mediate the four cardinal signs of inflammation, which are _____, ______,_____ , and_______.191views
Textbook QuestionCapillary permeability increases and plasma proteins leak into the interstitial fluid as part of the inflammatory process. Why is this desirable?274views
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.225views
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.180views
Textbook QuestionMultiple Choice More than one choice may apply. Chemical mediators of inflammation include a. interferon. b. complement. c. histamine. d. antibodies.234views
Multiple ChoiceIn the respiratory burst, __________ are released; these have a potent cell-killing ability.815views
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.172views
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.167views
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.169views
Multiple ChoiceWhich of the following statements about phagosomes and phagolysosomes are true?85views1rank
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.328views
Textbook QuestionGive a function for each of the following: (l) interleukins, (m) tumor necrosis factor, (n) colony-stimulating factors.220views
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 infection235views
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.344views
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 above179views
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.205views
Multiple ChoiceWhere are bacteria killed by enzymes and toxic substances once ingested by a white blood cell?77views1rank
Multiple ChoiceWhich of the following is/are secreted by leukocytes and macrophages and result(s) in a fever?700views
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?227views
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. Pain265views
Multiple ChoiceWhich nonspecific defense cells specialize in attacking cancer cells and virus-infected cells?1141views
Textbook QuestionInterferons are referred to as antiviral proteins. What stimulates their production, and how do they protect uninfected cells?241views
Multiple ChoiceWhen a localized area exhibits increased capillary filtration, hyperemia, and swelling, it is an indication that __________.1275views
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.214views
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.183views
Textbook QuestionWhat is complement? Besides bacterial lysis, what are some of the roles of complement?307views
Textbook QuestionPhagocytes move through capillary walls by squeezing between adjacent endothelial cells, a process known as (a) diapedesis, (b) chemotaxis, (c) adhesion, (d) perforation.256views
Textbook QuestionComplement activation (a) stimulates inflammation, (b) attracts phagocytes, (c) enhances phagocytosis, (d) achieves a, b, and c.231views
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