. Most leukocytes are produced in a. bone marrow. b. lymph nodes. c. Peyer\'s pa
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. Most leukocytes are produced in a. bone marrow. b. lymph nodes. c. Peyer's patches d. the thymus During the inflammatory response, we see contraction of endothelial cells of the capillaries, allowing for by leukocytes, but also causing a. chemotaxis vasodilation. b. chemotaxis edema. c. angiogenesis vasodilation. d. angiogenesis edema. Complement proteins a. are released by fibroblasts to repair damaged tissue. b. help shut down protein synthesis in virally infected cells. c. trigger apoptosis in cancerous cells. d. form the membrane attack complex to kill pathogens. Antibodies help combat pathogens by a. preventing them from being able to attack cells. b. acting as an opsonin. c. activating leukocytes, including mast cells that release cytokines. d. All of these are activities of antibodies.Explanation / Answer
1. Most leukocytes are produced in
a. bone marrow. Eventhough leukocytes are found throughout the body they are produced by bone marrow.
2. During the inflamatory response, we see contraction of endothelial cells of the capillaries, allowing for _____ by leukocytes, but also causing _____.
a. chemotaxis... vasodilation. Chemotaxis and Vasodilation are important stages of inflammatory response.
3. Complement proteins
d. form the membrane attack complex to kill pathogens. Complement is a chain of proteins that assist in destroying infected cells, viruses and bacteria. Complement proteins generally function on surface of pathogens.
4. Antibodies help combat pathogens by
d. All of these are activities of antibodies. As antibodies can prevent contact of pathogens with other cells. Eventually pathogens die. Or by the process of Opsonization, antibodies bind to the pathogen and release a chemical to attract the phagocytic cells. Phagocytic cells destroy enemy cells.
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