25:09IMMUNE SYSTEM MADE EASY- IMMUNOLOGY INNATE AND ADAPTIVE IMMUNITY SIMPLE ANIMATIONMEDSimplified454views
06:40Complement System Made Easy - Immunology- Classical Alternate & Lectin pathwayMEDSimplified1067views
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?285views
Textbook QuestionAll of the following are considered innate body defenses except a. complement, b. phagocytosis, c. antibodies, d. lysozyme, e. inflammation.293views
Multiple ChoiceWhich of the following minerals needed for bacterial reproduction do the liver and spleen sequester during a fever?807views
Textbook QuestionWhat seven defenses, present at birth, provide the body with the defensive capability known as innate (nonspecific) immunity?181views
Textbook QuestionFill in the blanks: Injured tissue releases chemicals called______ that mediate the four cardinal signs of inflammation, which are _____, ______,_____ , and_______.189views
Textbook QuestionCapillary permeability increases and plasma proteins leak into the interstitial fluid as part of the inflammatory process. Why is this desirable?269views
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.220views
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.173views
Textbook QuestionMultiple Choice More than one choice may apply. Chemical mediators of inflammation include a. interferon. b. complement. c. histamine. d. antibodies.231views
Multiple ChoiceIn the respiratory burst, __________ are released; these have a potent cell-killing ability.811views
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.167views
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.160views
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.163views
Multiple ChoiceWhich of the following statements about phagosomes and phagolysosomes are true?83views1rank
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.325views
Textbook QuestionGive a function for each of the following: (l) interleukins, (m) tumor necrosis factor, (n) colony-stimulating factors.216views
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 infection234views
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.341views
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 above176views
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.188views
Multiple ChoiceWhere are bacteria killed by enzymes and toxic substances once ingested by a white blood cell?73views1rank
Multiple ChoiceWhich of the following is/are secreted by leukocytes and macrophages and result(s) in a fever?698views
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?224views
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. Pain263views
Multiple ChoiceWhich nonspecific defense cells specialize in attacking cancer cells and virus-infected cells?1139views
Textbook QuestionInterferons are referred to as antiviral proteins. What stimulates their production, and how do they protect uninfected cells?240views
Multiple ChoiceWhen a localized area exhibits increased capillary filtration, hyperemia, and swelling, it is an indication that __________.1273views
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.207views
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.179views
Textbook QuestionWhat is complement? Besides bacterial lysis, what are some of the roles of complement?305views
Textbook QuestionPhagocytes move through capillary walls by squeezing between adjacent endothelial cells, a process known as (a) diapedesis, (b) chemotaxis, (c) adhesion, (d) perforation.247views
Textbook QuestionComplement activation (a) stimulates inflammation, (b) attracts phagocytes, (c) enhances phagocytosis, (d) achieves a, b, and c.219views
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