** SELECT ALL THAT APPLY Y^ ** Which of the following mechanisms help maintain lymph flow? a) pulsation lymphatic capillaries b) breathing d) capillary smooth muscle contraction e) valves in lymph vessel walls

Which of the following are important for viral protection? ( select all the correct answers)    a) Macrophages b) Interferons c) Skin d) Natural Killer lymphocytes

13. Which of the following statements about interferons is correct? a) The local release of interferons stimulates viral replication. b) Interferons provide humoral immunity. c) Virally infected cells release interferon as a warning to neighboring cells d) d. Interferons are produced by viruses. e) The release of interferons during inflammation stimulates fever. 14. Which of the following is NOT a normal function of the stomach? a) Absorption of alcohol. b) Emptying of chyme into the small intestine. c) Temporary storage of food. d) Mixing of food with stomach secretions. e) All the above are stomach functions 15. Acid chyme is buffered by_ a) mucus b) bicarbonate Ammonia secreted from the pancreas. c) d) urea e) gastrin 16. What property of bile salts allows them to emulsify lipids? a) the presence of cholesterol b) they can bind to hydrophilic and hydrophobic substances c) they repel water d) they allow bacteria to survive in the large intestine. e) they are activated by acid from…

If a person is given a transfusion with the wrong blood type, what mechanism of action is responsible for the reaction seen in the body? O 1) IgE binds to mast cells releasing cytokines 2) Antigen-antibody complexes (IgG, IgM and IgA) lodge in basement membranes of tissues, neutrophil degranulation damages the tissues O 3) T cells respond to the inappropriate cells 4) IgG and IgM bind to cells stimulating complement, triggering cell lysis

ASAP

T cells can differentiate into 5 different subsets of helper T cells. Answer the following questions for TH1 cells:  A)    In general, list three unique factors that differentiate the TH1 subset from the other subsets. B)     For each of those factors identified in A, provide one specific example that applies to TH1 cells. C)   What type of pathogens are targeted by the TH1 cells?

Which statement best describes the location and flow of lymph in a healthy animal? a.) Lymph is blood that has had its cellular components removed and flows through the spleen to be filtered. b.) Lymph is the immune-specific portion of blood and is pumped throughout the body in the arteries, capillaries, and veins. c.) Lymph is extracellular fluid that passes through lymph nodes before being mixed with the blood.  d.) Lymph is musuc throughout many parts of the body that helps trap foreign perticles and is expelled before they can invade the body.

Which of the following activates non-specific immune responses?  a.) Pathogen-associated molecular patterns b.) Body cells lacking major histocompatibility complex c.) Particles recognized and coated by antibodies d.) All of the above

Which of the choices is required to activate a helper T cell, which in turn can stimulate antibody production by B cells? A)An antibody displayed by a major histocompatibility complex protein B)A major histocompatibility complex protein alone C)An antigen displayed by a major histocompatibility complex protein D)An antigen alone

The correct order of words to describe how innate immune response responds to a pathogen that has gotten by the physical and chemical barriers is: À) Skin, Saliva, Cytokines, Macrophage B)Macrophage, Cytokines, Neutrophil, Natural Killer Cell C) Neutrophil, Cytokines, Killer T Cell, Antibodies D) Antigen, Macrophage, B Cell, Killer T Cell